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File373 - Multimodal Mapping of Visual Motion Perceptual Decision: Dissecting the Role of Different Motion Integration Areas in Visual Surface Reconstruction2016-022017-10

Reference code: PT/FB
Entity holding: BIAL Foundation
Location: S. Mamede do Coronado
Title:
BIAL Foundation Archive
Start date: 1994
History:
The BIAL Foundation was created in 1994 by Laboratórios BIAL in conjunction with the Council of Rectors of Portuguese Universities. BIAL’s Foundation mission is to foster the scientific study of Man from both the physical and spiritual perspectives.
Along the years the BIAL Foundation has developed an important relationship with the scientific community, first in Portugal and after worldwide. Today it is an institution of reference which aims to stimulate new researches that may help people, promote more health and contribute to new milestones to gain access to knowledge.
Among its activities the BIAL Foundation manages the BIAL Award, created in 1984, one of the most important awards in the Health field in Europe. The BIAL Award rewards both the basic and the clinical research distinguishing works of major impact in medical research.
The BIAL Foundation also assigns Scientific Research Scholarships for the study of neurophysiological and mental health in people, arousing the interest of researchers in the areas of Psychophysiology and Parapsychology.
To date the BIAL Foundation has supported 461 projects, more than 1000 researchers, with research groups in twenty-seven countries, resulting, until April 2013, in about 600 full papers, out of which 172 published in indexed international journals with an average impact factor of 3.6 and a substantial number of citations (1665).
Since 1996 the BIAL Foundation organizes the Symposia entitled "Behind and Beyond the Brain", a Forum that gathers well renowned neurosciences speakers and the BIAL Foundation Fellows which are spread around the world.
Classified as an institution of public utility, the BIAL Foundation includes among its patrons the Portuguese President, the Portuguese Universities Rectors' Council and the Portuguese Medical Association.
URL: http://www.bial.com/pt/
Accessibility: By permission

Reference code: PT/FB/BL
Entity holding: BIAL Foundation
Title: BIAL Grants
Start date: 1994
History:
In 1994 the BIAL Foundation launched a programme of science research grants with the aim of encouraging the research into Man’s physical and mental processes, namely in fields still largely unexplored but which warrant further scientific analysis, as Psychophysiology and Parapsychology.
Since its launch, applications to the BIAL grants have been increasing. Up to now 461 projects have been supported, involving more than 1000 researchers from 27 countries.
The approved applications have benefited from grants in amounts comprised between €5,000 and €50, 000. The amount to be granted is fixed by the Scientific board according to the needs of each project.
The supported projects have originated, until April 2013, in about 600 full papers, 172 out of which were published in indexed international journals with an average impact factor of 3.6 and a substantial number of citations (1665).
Among the BIAL Foundation fellows is worth highlighting the presence of scientists from prestigious universities from the United States, United Kingdom, Australia, Russia, Germany, Japan, France, Canada, and many others.
The BIAL grants are promoted biannually.

Reference code: PT/FB/BL-2014
Location: BF-GMS
Title:
2014 Grants
Start date: 2015-01

Reference code: PT/FB/BL-2014-373
Location: BF-GMS
Title:
373 - Multimodal Mapping of Visual Motion Perceptual Decision: Dissecting the Role of Different Motion Integration Areas in Visual Surface Reconstruction
Duration: 2016-02 - 2017-10
Researcher(s):
Miguel de Sá e Sousa de Castelo Branco, Gabriel Nascimento Ferreira da Costa, Gilberto Silva, Joăo Valente Duarte, Ricardo Martins
Institution(s): ICNAS - Institute for Nuclear Sciences Applied to Health, Coimbra, Portugal; IBILI - Institute for Biomedical Imaging and Life Sciences, Coimbra (Portugal)
Contents: Contents:
Application form
Correspondence
Progress report
Final report
Articles
Author: Castelo-Branco, M.
Secondary author(s):
Costa, G., Silva, G., Duarte, J., Martins, R.
Number of reproductions:
1
Keywords:
Motion perception / Decision-making / Perceptual Ambiguity / Decision Models / Psychophysiology
DocumentWorking memory load influences perceptual ambiguity by competing for fronto-parietal attentional resources2016

Reference code: PT/FB
Entity holding: BIAL Foundation
Location: S. Mamede do Coronado
Title:
BIAL Foundation Archive
Start date: 1994
History:
The BIAL Foundation was created in 1994 by Laboratórios BIAL in conjunction with the Council of Rectors of Portuguese Universities. BIAL’s Foundation mission is to foster the scientific study of Man from both the physical and spiritual perspectives.
Along the years the BIAL Foundation has developed an important relationship with the scientific community, first in Portugal and after worldwide. Today it is an institution of reference which aims to stimulate new researches that may help people, promote more health and contribute to new milestones to gain access to knowledge.
Among its activities the BIAL Foundation manages the BIAL Award, created in 1984, one of the most important awards in the Health field in Europe. The BIAL Award rewards both the basic and the clinical research distinguishing works of major impact in medical research.
The BIAL Foundation also assigns Scientific Research Scholarships for the study of neurophysiological and mental health in people, arousing the interest of researchers in the areas of Psychophysiology and Parapsychology.
To date the BIAL Foundation has supported 461 projects, more than 1000 researchers, with research groups in twenty-seven countries, resulting, until April 2013, in about 600 full papers, out of which 172 published in indexed international journals with an average impact factor of 3.6 and a substantial number of citations (1665).
Since 1996 the BIAL Foundation organizes the Symposia entitled "Behind and Beyond the Brain", a Forum that gathers well renowned neurosciences speakers and the BIAL Foundation Fellows which are spread around the world.
Classified as an institution of public utility, the BIAL Foundation includes among its patrons the Portuguese President, the Portuguese Universities Rectors' Council and the Portuguese Medical Association.
URL: http://www.bial.com/pt/
Accessibility: By permission

Reference code: PT/FB/BL
Entity holding: BIAL Foundation
Title: BIAL Grants
Start date: 1994
History:
In 1994 the BIAL Foundation launched a programme of science research grants with the aim of encouraging the research into Man’s physical and mental processes, namely in fields still largely unexplored but which warrant further scientific analysis, as Psychophysiology and Parapsychology.
Since its launch, applications to the BIAL grants have been increasing. Up to now 461 projects have been supported, involving more than 1000 researchers from 27 countries.
The approved applications have benefited from grants in amounts comprised between €5,000 and €50, 000. The amount to be granted is fixed by the Scientific board according to the needs of each project.
The supported projects have originated, until April 2013, in about 600 full papers, 172 out of which were published in indexed international journals with an average impact factor of 3.6 and a substantial number of citations (1665).
Among the BIAL Foundation fellows is worth highlighting the presence of scientists from prestigious universities from the United States, United Kingdom, Australia, Russia, Germany, Japan, France, Canada, and many others.
The BIAL grants are promoted biannually.

Reference code: PT/FB/BL-2014
Location: BF-GMS
Title:
2014 Grants
Start date: 2015-01

Reference code: PT/FB/BL-2014-373
Location: BF-GMS
Title:
373 - Multimodal Mapping of Visual Motion Perceptual Decision: Dissecting the Role of Different Motion Integration Areas in Visual Surface Reconstruction
Duration: 2016-02 - 2017-10
Researcher(s):
Miguel de Sá e Sousa de Castelo Branco, Gabriel Nascimento Ferreira da Costa, Gilberto Silva, Joăo Valente Duarte, Ricardo Martins
Institution(s): ICNAS - Institute for Nuclear Sciences Applied to Health, Coimbra, Portugal; IBILI - Institute for Biomedical Imaging and Life Sciences, Coimbra (Portugal)
Contents: Contents:
Application form
Correspondence
Progress report
Final report
Articles
Author: Castelo-Branco, M.
Secondary author(s):
Costa, G., Silva, G., Duarte, J., Martins, R.
Number of reproductions:
1
Keywords:
Motion perception / Decision-making / Perceptual Ambiguity / Decision Models / Psychophysiology

Reference code: PT/FB/BL-2014-373.02
Location: BF-GMS
Title:
Working memory load influences perceptual ambiguity by competing for fronto-parietal attentional resources
Publication year: 2016
URL:
https://www.ncbi.nlm.nih.gov/pubmed/27590722
Abstract/Results: ABSTRACT:
A visual stimulus is defined as ambiguous when observers perceive it as having at least two distinct and spontaneously alternating interpretations. Neuroimaging studies suggest an involvement of a right fronto-parietal network regulating the balance between stable percepts and the triggering of alternative interpretations. As spontaneous perceptual reversals may occur even in the absence of attention to these stimuli, we investigated neural activity patterns in response to perceptual changes of ambiguous Necker cube under different amounts of working memory load using a dual-task design. We hypothesized that the same regions that process working memory load are involved in perceptual switching and confirmed the prediction that perceptual reversals led to fMRI responses that linearly depended on load. Accordingly, posterior Superior Parietal Lobule, anterior Prefrontal and Dorsolateral Prefrontal cortices exhibited differential BOLD signal changes in response to perceptual reversals under working memory load. Our results also suggest that the posterior Superior Parietal Lobule may be directly involved in the emergence of perceptual reversals, given that it specifically reflects both perceptual versus real changes and load levels. The anterior Prefrontal and Dorsolateral Prefrontal cortices, showing a significant interaction between reversal levels and load, might subserve a modulatory role in such reversals, in a mirror symmetric way: in the former activation is suppressed by the highest loads, and in the latter deactivation is reduced by highest loads, suggesting a more direct role of the aPFC in reversal generation.
Accessibility: Document exists in file
Copyright/Reproduction:
By permission
Language:
eng
Related objects:
BL-2012-132.15; BL-2012-133.13
Author: Intaite, M.
Secondary author(s):
Duarte, J., Castelo-Branco, M.
Document type:
Article-d
Number of reproductions:
1
Reference:
Intaite, M., Duarte, J., & Castelo-Branco, M. (2016). Working memory load influences perceptual ambiguity by competing for fronto-parietal attentional resources. Brain Research, 1650, 142-151. https://doi.org/10.1016/j.brainres.2016.08.044
2-year Impact Factor: 2.746|2016
Times cited: 6|2024-02-07
Indexed document: Yes
Quartile: Q3
Keywords: Anterior prefrontal cortex / Functional magnetic resonance imaging (fMRI) / Necker cube / Posterior superior parietal lobule / Working memory load
DocumentBinding of ambiguous visual stimuli is associated with changes in beta power but not with synchrony2016

Reference code: PT/FB
Entity holding: BIAL Foundation
Location: S. Mamede do Coronado
Title:
BIAL Foundation Archive
Start date: 1994
History:
The BIAL Foundation was created in 1994 by Laboratórios BIAL in conjunction with the Council of Rectors of Portuguese Universities. BIAL’s Foundation mission is to foster the scientific study of Man from both the physical and spiritual perspectives.
Along the years the BIAL Foundation has developed an important relationship with the scientific community, first in Portugal and after worldwide. Today it is an institution of reference which aims to stimulate new researches that may help people, promote more health and contribute to new milestones to gain access to knowledge.
Among its activities the BIAL Foundation manages the BIAL Award, created in 1984, one of the most important awards in the Health field in Europe. The BIAL Award rewards both the basic and the clinical research distinguishing works of major impact in medical research.
The BIAL Foundation also assigns Scientific Research Scholarships for the study of neurophysiological and mental health in people, arousing the interest of researchers in the areas of Psychophysiology and Parapsychology.
To date the BIAL Foundation has supported 461 projects, more than 1000 researchers, with research groups in twenty-seven countries, resulting, until April 2013, in about 600 full papers, out of which 172 published in indexed international journals with an average impact factor of 3.6 and a substantial number of citations (1665).
Since 1996 the BIAL Foundation organizes the Symposia entitled "Behind and Beyond the Brain", a Forum that gathers well renowned neurosciences speakers and the BIAL Foundation Fellows which are spread around the world.
Classified as an institution of public utility, the BIAL Foundation includes among its patrons the Portuguese President, the Portuguese Universities Rectors' Council and the Portuguese Medical Association.
URL: http://www.bial.com/pt/
Accessibility: By permission

Reference code: PT/FB/BL
Entity holding: BIAL Foundation
Title: BIAL Grants
Start date: 1994
History:
In 1994 the BIAL Foundation launched a programme of science research grants with the aim of encouraging the research into Man’s physical and mental processes, namely in fields still largely unexplored but which warrant further scientific analysis, as Psychophysiology and Parapsychology.
Since its launch, applications to the BIAL grants have been increasing. Up to now 461 projects have been supported, involving more than 1000 researchers from 27 countries.
The approved applications have benefited from grants in amounts comprised between €5,000 and €50, 000. The amount to be granted is fixed by the Scientific board according to the needs of each project.
The supported projects have originated, until April 2013, in about 600 full papers, 172 out of which were published in indexed international journals with an average impact factor of 3.6 and a substantial number of citations (1665).
Among the BIAL Foundation fellows is worth highlighting the presence of scientists from prestigious universities from the United States, United Kingdom, Australia, Russia, Germany, Japan, France, Canada, and many others.
The BIAL grants are promoted biannually.

Reference code: PT/FB/BL-2014
Location: BF-GMS
Title:
2014 Grants
Start date: 2015-01

Reference code: PT/FB/BL-2014-373
Location: BF-GMS
Title:
373 - Multimodal Mapping of Visual Motion Perceptual Decision: Dissecting the Role of Different Motion Integration Areas in Visual Surface Reconstruction
Duration: 2016-02 - 2017-10
Researcher(s):
Miguel de Sá e Sousa de Castelo Branco, Gabriel Nascimento Ferreira da Costa, Gilberto Silva, Joăo Valente Duarte, Ricardo Martins
Institution(s): ICNAS - Institute for Nuclear Sciences Applied to Health, Coimbra, Portugal; IBILI - Institute for Biomedical Imaging and Life Sciences, Coimbra (Portugal)
Contents: Contents:
Application form
Correspondence
Progress report
Final report
Articles
Author: Castelo-Branco, M.
Secondary author(s):
Costa, G., Silva, G., Duarte, J., Martins, R.
Number of reproductions:
1
Keywords:
Motion perception / Decision-making / Perceptual Ambiguity / Decision Models / Psychophysiology

Reference code: PT/FB/BL-2014-373.03
Location: BF-GMS
Title:
Binding of ambiguous visual stimuli is associated with changes in beta power but not with synchrony
Publication year: 2016
URL:
https://ww5.aievolution.com/hbm1601/index.cfm?do=abs.viewAbs&abs=2992
Abstract/Results: ABSTRACT:
INTRODUCTION
In vision, perceptual features are processed in several regions distributed across the brain. Yet the brain achieves a coherent perception of visual scenes and objects through integration of features that are encoded in spatially segregated brain areas. How the brain seamlessly achieves this accurate integration is currently unknown and is referred to as the "binding problem" (Von der Malsburg, 1981). Among the proposed mechanisms meant to resolve the binding problem, the binding-by-synchrony hypothesis (BBS) proposes that binding is carried out through the synchronous discharge of different neuronal assemblies (Singer & Gray, 1995). The present study aimed at providing a critical test to the BBS hypothesis by evaluating long range connectivity during a motion integration visual task that entails binding across hemispheres.
METHODS
EEG (58 channels) was recorded while participants observed an ambiguous stimulus that could be perceived in either a "bound" configuration, requiring visual integration across hemispheres, or an "unbound" configuration, where the images at each hemifield were perceived as being separate (Wallach, 1935; English translation in Wuerger et al., 1996). Participants reported continuously their perceptual decision. 21 subjects performed this task.
RESULTS
Synchrony between neural populations belonging to distinct hemispheres was estimated using the imaginary part of coherency (ImCoh) in search of a correlation between interhemispheric synchrony and perceptual binding. We found no evidence of increased synchrony during periods of bound perception, compared to unbound, at alpha (8-12 Hz), beta (13-30 Hz) or gamma frequencies (> 30 Hz) and perceptual changes were not accompanied by changes in ImCoh. The distinct visual experiences showed, nonetheless, differences in power, particularly at the beta frequency range (12-23 Hz) over parietal regions. Moreover, around the moment of perceptual switches, changes in alpha and beta power provided clear neurophysiological correlates of a change in visual experience, with an increase in beta oscillations indicating a change towards a bound configuration.
CONCLUSIONS
Our findings reveal that the visual experience of binding can be identified by distinct signatures of oscillatory activity, regardless of long range synchrony. In our current paradigm, visual binding occurred under ambiguous conditions, but integration of visual information across hemifields was found not to correlate with increased synchrony across hemispheres. On the other hand, spectral signatures of increased power at beta frequencies were found to correlate with the perception of the bound stimulus. When the bound configuration was the dominant percept, beta activity was increased compared to the unbound perception, with greater differences found over parietal regions. This suggests that the ambiguity might be resolved at hierarchically higher cortical areas without the need for synchronous activity at lower visual ones.
Accessibility: Document does not exist in file
Language:
eng
Author:
Costa, G.
Secondary author(s):
Duarte, J., Martins, R., Castelo-Branco, M.
Document type:
Online abstract
Number of reproductions:
1
Reference:
Costa, G., Duarte, J., Martins, R., & Castelo-Branco, M. (2016, June). Binding of ambiguous visual stimuli is associated with changes in beta power but not with synchrony. Poster presented at the 22nd Annual Meeting of the Organization for Human Brain Mapping, Geneve, Switzwerland. Abstract retrieved at https://ww5.aievolution.com/hbm1601/index.cfm?do=abs.viewAbs&abs=2992
Indexed document: No
Keywords: Electroencephalogram (EEG) / Vision / Binding / Synchrony / Oscillations
DocumentResponses in mesoscopic clusters of human MT+ reflect the perceived direction of ambiguous motion2016

Reference code: PT/FB
Entity holding: BIAL Foundation
Location: S. Mamede do Coronado
Title:
BIAL Foundation Archive
Start date: 1994
History:
The BIAL Foundation was created in 1994 by Laboratórios BIAL in conjunction with the Council of Rectors of Portuguese Universities. BIAL’s Foundation mission is to foster the scientific study of Man from both the physical and spiritual perspectives.
Along the years the BIAL Foundation has developed an important relationship with the scientific community, first in Portugal and after worldwide. Today it is an institution of reference which aims to stimulate new researches that may help people, promote more health and contribute to new milestones to gain access to knowledge.
Among its activities the BIAL Foundation manages the BIAL Award, created in 1984, one of the most important awards in the Health field in Europe. The BIAL Award rewards both the basic and the clinical research distinguishing works of major impact in medical research.
The BIAL Foundation also assigns Scientific Research Scholarships for the study of neurophysiological and mental health in people, arousing the interest of researchers in the areas of Psychophysiology and Parapsychology.
To date the BIAL Foundation has supported 461 projects, more than 1000 researchers, with research groups in twenty-seven countries, resulting, until April 2013, in about 600 full papers, out of which 172 published in indexed international journals with an average impact factor of 3.6 and a substantial number of citations (1665).
Since 1996 the BIAL Foundation organizes the Symposia entitled "Behind and Beyond the Brain", a Forum that gathers well renowned neurosciences speakers and the BIAL Foundation Fellows which are spread around the world.
Classified as an institution of public utility, the BIAL Foundation includes among its patrons the Portuguese President, the Portuguese Universities Rectors' Council and the Portuguese Medical Association.
URL: http://www.bial.com/pt/
Accessibility: By permission

Reference code: PT/FB/BL
Entity holding: BIAL Foundation
Title: BIAL Grants
Start date: 1994
History:
In 1994 the BIAL Foundation launched a programme of science research grants with the aim of encouraging the research into Man’s physical and mental processes, namely in fields still largely unexplored but which warrant further scientific analysis, as Psychophysiology and Parapsychology.
Since its launch, applications to the BIAL grants have been increasing. Up to now 461 projects have been supported, involving more than 1000 researchers from 27 countries.
The approved applications have benefited from grants in amounts comprised between €5,000 and €50, 000. The amount to be granted is fixed by the Scientific board according to the needs of each project.
The supported projects have originated, until April 2013, in about 600 full papers, 172 out of which were published in indexed international journals with an average impact factor of 3.6 and a substantial number of citations (1665).
Among the BIAL Foundation fellows is worth highlighting the presence of scientists from prestigious universities from the United States, United Kingdom, Australia, Russia, Germany, Japan, France, Canada, and many others.
The BIAL grants are promoted biannually.

Reference code: PT/FB/BL-2014
Location: BF-GMS
Title:
2014 Grants
Start date: 2015-01

Reference code: PT/FB/BL-2014-373
Location: BF-GMS
Title:
373 - Multimodal Mapping of Visual Motion Perceptual Decision: Dissecting the Role of Different Motion Integration Areas in Visual Surface Reconstruction
Duration: 2016-02 - 2017-10
Researcher(s):
Miguel de Sá e Sousa de Castelo Branco, Gabriel Nascimento Ferreira da Costa, Gilberto Silva, Joăo Valente Duarte, Ricardo Martins
Institution(s): ICNAS - Institute for Nuclear Sciences Applied to Health, Coimbra, Portugal; IBILI - Institute for Biomedical Imaging and Life Sciences, Coimbra (Portugal)
Contents: Contents:
Application form
Correspondence
Progress report
Final report
Articles
Author: Castelo-Branco, M.
Secondary author(s):
Costa, G., Silva, G., Duarte, J., Martins, R.
Number of reproductions:
1
Keywords:
Motion perception / Decision-making / Perceptual Ambiguity / Decision Models / Psychophysiology

Reference code: PT/FB/BL-2014-373.04
Location: BF-GMS
Title:
Responses in mesoscopic clusters of human MT+ reflect the perceived direction of ambiguous motion
Publication year: 2016
URL:
https://ww5.aievolution.com/hbm1601/index.cfm?do=abs.viewAbs&abs=3402
Abstract/Results: ABSTRACT:
INTRODUCTION
Advances in ultra-high field (uhf) fMRI now allow for probing functional responses at the level of mesoscopic structures such as columns and layers (e.g. [1-5]). This offers the opportunity to relate responses at the level of cortical building blocks to perception. Doing so, however, requires using stimuli that allow for dissociating sensory input and perceptual interpretation.
Here, we presented subjects with a bistable motion quartet while recording responses in human motion complex (hMT+). The "motion quartet" gives rise to two mutually exclusive interpretations: either horizontal or vertical motion. Importantly, the percepts switch over time, while the sensory input remains constant throughout.
In previous studies, we found that the level of signal measured in hMT+ as a whole is reflective of such perceptual switches [6]. We also showed that it is feasible to map columnar-level clusters within hMT+ that prefer specific axes of motion [7]. Combining these two research lines here, we investigated the role of mesoscopic hMT+ clusters in perceived motion direction using uhf fMRI at 7 Tesla.
METHODS
Seven subjects (median age = 25 y, 2 females) participated in the study. Area hMT+ was localised with standard moving and static dot stimuli [8] using a standard GE EPI sequence at 1.6 mm isotropic resolution. We then zoomed in hMT+ using a sub-millimetre GE EPI sequence (TE = 25.6 ms; FA = 69°; TR = 2000 ms; resolution: 0.8 mm isotropic). Subjects were presented with either the bistable motion quartet ("ambiguous motion") or a motion display in which squares moved unambiguously either along the horizontal or vertical motion trajectory ("physical motion"). For both stimulus types, participants reported the perceived direction of motion by button presses.
Two participants were excluded from analyses due to excessive head motion or inappropriate task performance. Data were analysed using the standard general linear model. All analyses were limited to voxels that responded more to moving than static dots (p < 0.005), based on hMT+ localiser data. For the ambiguous and physical motion experiments, voxels were considered part of the vertical cluster if their time courses were modulated by vertical motion and if they responded more to vertical than to horizontal motion (t > 1.5). Voxels were considered part of the horizontal cluster if reverse conditions applied. For event-related averaging, functional signals were extracted from identified motion clusters, converted to percentage signal change, and averaged for horizontal and vertical stimulus condition.
RESULTS
For both the physical and ambiguous motion experiments, we observed clusters of voxels in hMT+ preferring either horizontal or vertical motion stimuli. Upon qualitative inspection there was considerable overlap in voxel preferences between the two experiments (Figure 1). This overlap was also shown in a quantitative analysis (Figure 2). Event-related averages indicated that signal time courses in horizontal and vertical clusters reflected the perceived motion direction, for both the physical (Figure 3) and the ambiguous (Figure 4) motion display. Thus, when subjects indicated a switch in perception from vertical to horizontal motion, this was paralleled by an increase in signal in the horizontal hMT+ cluster and a decrease in the vertical cluster. Reversely, when subjects reported a switch from horizontal to vertical motion, signal increased in the vertical cluster and decreased in the horizontal one.
CONCLUSIONS
We found preliminary evidence that the content of conscious perception of motion stimuli can be read out from dynamic activation changes of direction-selective, mesoscopic clusters in human MT+. Previous studies [9] demonstrated a coupling between visual awareness and activity in different macroscopic brain areas. Our study indicates for the first time that uhf fMRI studies might allow for disentangling the contribution to visual awareness from mesoscopic clusters within one specialized brain area.
Accessibility: Document does not exist in file
Language:
eng
Author:
Schneider, M.
Secondary author(s):
Goebel, R., Kemper, V., Castelo-Branco, M., Ugurbil, K., Yacou, E., de Martino, F.
Document type:
Online abstract
Number of reproductions:
1
Reference:
Schneider, M., Goebel, R., Kemper, V., Castelo-Branco, M., Ugurbil, K., Yacou, E., & de Martino, F. (2016, June). Responses in mesoscopic clusters of human MT+ reflect the perceived direction of ambiguous motion. Poster presented at the 22nd Annual Meeting of the Organization for Human Brain Mapping, Geneve, Switzwerland. Abstract retrieved at https://ww5.aievolution.com/hbm1601/index.cfm?do=abs.viewAbs&abs=3402
Indexed document: No
Keywords: Consciousness / Cortical Columns / Functional magnetic resonance imaging (fMRI) / Perception / Vision
DocumentLong-range perceptual integration of visual motion revealed at high resolution 7T fMRI2016

Reference code: PT/FB
Entity holding: BIAL Foundation
Location: S. Mamede do Coronado
Title:
BIAL Foundation Archive
Start date: 1994
History:
The BIAL Foundation was created in 1994 by Laboratórios BIAL in conjunction with the Council of Rectors of Portuguese Universities. BIAL’s Foundation mission is to foster the scientific study of Man from both the physical and spiritual perspectives.
Along the years the BIAL Foundation has developed an important relationship with the scientific community, first in Portugal and after worldwide. Today it is an institution of reference which aims to stimulate new researches that may help people, promote more health and contribute to new milestones to gain access to knowledge.
Among its activities the BIAL Foundation manages the BIAL Award, created in 1984, one of the most important awards in the Health field in Europe. The BIAL Award rewards both the basic and the clinical research distinguishing works of major impact in medical research.
The BIAL Foundation also assigns Scientific Research Scholarships for the study of neurophysiological and mental health in people, arousing the interest of researchers in the areas of Psychophysiology and Parapsychology.
To date the BIAL Foundation has supported 461 projects, more than 1000 researchers, with research groups in twenty-seven countries, resulting, until April 2013, in about 600 full papers, out of which 172 published in indexed international journals with an average impact factor of 3.6 and a substantial number of citations (1665).
Since 1996 the BIAL Foundation organizes the Symposia entitled "Behind and Beyond the Brain", a Forum that gathers well renowned neurosciences speakers and the BIAL Foundation Fellows which are spread around the world.
Classified as an institution of public utility, the BIAL Foundation includes among its patrons the Portuguese President, the Portuguese Universities Rectors' Council and the Portuguese Medical Association.
URL: http://www.bial.com/pt/
Accessibility: By permission

Reference code: PT/FB/BL
Entity holding: BIAL Foundation
Title: BIAL Grants
Start date: 1994
History:
In 1994 the BIAL Foundation launched a programme of science research grants with the aim of encouraging the research into Man’s physical and mental processes, namely in fields still largely unexplored but which warrant further scientific analysis, as Psychophysiology and Parapsychology.
Since its launch, applications to the BIAL grants have been increasing. Up to now 461 projects have been supported, involving more than 1000 researchers from 27 countries.
The approved applications have benefited from grants in amounts comprised between €5,000 and €50, 000. The amount to be granted is fixed by the Scientific board according to the needs of each project.
The supported projects have originated, until April 2013, in about 600 full papers, 172 out of which were published in indexed international journals with an average impact factor of 3.6 and a substantial number of citations (1665).
Among the BIAL Foundation fellows is worth highlighting the presence of scientists from prestigious universities from the United States, United Kingdom, Australia, Russia, Germany, Japan, France, Canada, and many others.
The BIAL grants are promoted biannually.

Reference code: PT/FB/BL-2014
Location: BF-GMS
Title:
2014 Grants
Start date: 2015-01

Reference code: PT/FB/BL-2014-373
Location: BF-GMS
Title:
373 - Multimodal Mapping of Visual Motion Perceptual Decision: Dissecting the Role of Different Motion Integration Areas in Visual Surface Reconstruction
Duration: 2016-02 - 2017-10
Researcher(s):
Miguel de Sá e Sousa de Castelo Branco, Gabriel Nascimento Ferreira da Costa, Gilberto Silva, Joăo Valente Duarte, Ricardo Martins
Institution(s): ICNAS - Institute for Nuclear Sciences Applied to Health, Coimbra, Portugal; IBILI - Institute for Biomedical Imaging and Life Sciences, Coimbra (Portugal)
Contents: Contents:
Application form
Correspondence
Progress report
Final report
Articles
Author: Castelo-Branco, M.
Secondary author(s):
Costa, G., Silva, G., Duarte, J., Martins, R.
Number of reproductions:
1
Keywords:
Motion perception / Decision-making / Perceptual Ambiguity / Decision Models / Psychophysiology

Reference code: PT/FB/BL-2014-373.05
Location: BF-GMS
Title:
Long-range perceptual integration of visual motion revealed at high resolution 7T fMRI
Publication year: 2016
URL:
https://ww5.aievolution.com/hbm1601/index.cfm?do=abs.viewAbs&abs=2467
Abstract/Results: ABSTRACT:
INTRODUCTION
It has been suggested that activity in the human motion complex (hMT+) reflects global motion interpretation of perceptual bistability (Castelo-Branco et al., 2002). Here we investigated how the bistable perception is mapped on hMT+ columnar-like features with a paradigm in which motion coherence requires interhemispheric integration and incoherence breaks such binding across hemispheres (Wallach, 1935).
METHODS
We acquired 7 Tesla fMRI data (0.8 mm isotropic resolution, TR=2000 ms, TE=26 ms, 28 slices echo planar imaging (EPI)) from 9 healthy participants, presented with a bistable (ambiguous) stimulus. The ambiguous stimulus consisted of continuously moving oblique lines forming a v-shape. With central fixation, participants alternated between two percepts: downward global motion perception (the lines are perceived moving downward as a single roof-like object) and the inward movement perception (the lines are perceived as two separate objects, one in each visual hemi-field, moving inward). An unambiguous (control) stimulus was also presented to the participants. By disambiguating the stimulus with additional moving dots the participants were biased to unambiguously perceive each kind of global percept, as induced by dot motion. In order to functionally localize direction of motion-tuned columnar-like features in hMT+, we also showed participants blocks of moving lines in different axes of motion, interleaved with static lines. Since previous studies have reliably mapped axes-of-motion, we pooled responses with opposing directions (Zimmermann et al., 2011). Analyses results were considered using only significantly activated voxel clusters at P<0.05 (corrected).
RESULTS
In all participants, both ambiguous and unambiguous stimulation conditions evoked stronger hMT+ bilateral activation during inward movement perception, entailing interhemispheric segregation, than downward (implying interhemispheric integration), which is to be expected if distinct neuronal assemblies are activated during inward motion, i.e. leftward plus rightward movement, compared to a common population for downward motion. Furthermore, for ambiguous stimulation the hMT+ correlation across hemispheres tend to be higher during downward coherent percept than during the inward percept. The definition of the axes of motion preference was confirmed by the successful automatic classification of each displayed movement orientation. The analysis of the ambiguous task results inside groups of voxels with different axes of motion preferences confirmed a higher activation of voxels with preference for the vertical movement during the downward movement perception than during inward movement perception. On the other hand, voxels with preference for the horizontal movement showed increased activation during inward perception, suggesting that perceptual interhemispheric representations can be found at the columnar level (Fig.1).
CONCLUSIONS
We conclude that perceptual representations requiring either interhemispheric segregation or integration can be localized at the columnar level in area hMT+. Accordingly, different movement percepts are bilaterally modulated by hMT+ columnar-level responses with different axes of motion preferences: the inward percept (entailing segregation) modulates activity in the columns preferring the horizontal axis of motion, and the downward percept (entailing integration) modulates activity in the columns preferring the vertical axis of motion. Our results extend to the interhemispheric domain previous studies suggesting an important role for hMT+ columns in representing bistable perception (Goebel et al., 2014; Schneider et al., 2015) and demonstrating that not only the transition of perceptual states but also the content of perception can be read-out directly from the activity patterns across axes of motion columns in hMT+ area.
Accessibility: Document does not exist in file
Language:
eng
Author:
Sousa, T.
Secondary author(s):
Kemper, V., Costa, G., Duarte, J., Martins, R., Goebel, R., Castelo-Branco, M.
Document type:
Online abstract
Number of reproductions:
1
Reference:
Sousa, T., Kemper, V., Costa, G., Duarte, J., Martins, R., Goebel, R., & Castelo-Branco, M. (2016, June). Long-range perceptual integration of visual motion revealed at high resolution 7T fMRI. Poster presented at the 22nd Annual Meeting of the Organization for Human Brain Mapping, Geneve, Switzwerland. Abstract retrieved at https://ww5.aievolution.com/hbm1601/index.cfm?do=abs.viewAbs&abs=2467
Indexed document: No
Keywords: Functional magnetic resonance imaging (fMRI) / high field MR / Perception
DocumentInterhemispheric binding of ambiguous visual motion is associated with changes in beta oscillatory activity but not with gamma range synchrony2017

Reference code: PT/FB
Entity holding: BIAL Foundation
Location: S. Mamede do Coronado
Title:
BIAL Foundation Archive
Start date: 1994
History:
The BIAL Foundation was created in 1994 by Laboratórios BIAL in conjunction with the Council of Rectors of Portuguese Universities. BIAL’s Foundation mission is to foster the scientific study of Man from both the physical and spiritual perspectives.
Along the years the BIAL Foundation has developed an important relationship with the scientific community, first in Portugal and after worldwide. Today it is an institution of reference which aims to stimulate new researches that may help people, promote more health and contribute to new milestones to gain access to knowledge.
Among its activities the BIAL Foundation manages the BIAL Award, created in 1984, one of the most important awards in the Health field in Europe. The BIAL Award rewards both the basic and the clinical research distinguishing works of major impact in medical research.
The BIAL Foundation also assigns Scientific Research Scholarships for the study of neurophysiological and mental health in people, arousing the interest of researchers in the areas of Psychophysiology and Parapsychology.
To date the BIAL Foundation has supported 461 projects, more than 1000 researchers, with research groups in twenty-seven countries, resulting, until April 2013, in about 600 full papers, out of which 172 published in indexed international journals with an average impact factor of 3.6 and a substantial number of citations (1665).
Since 1996 the BIAL Foundation organizes the Symposia entitled "Behind and Beyond the Brain", a Forum that gathers well renowned neurosciences speakers and the BIAL Foundation Fellows which are spread around the world.
Classified as an institution of public utility, the BIAL Foundation includes among its patrons the Portuguese President, the Portuguese Universities Rectors' Council and the Portuguese Medical Association.
URL: http://www.bial.com/pt/
Accessibility: By permission

Reference code: PT/FB/BL
Entity holding: BIAL Foundation
Title: BIAL Grants
Start date: 1994
History:
In 1994 the BIAL Foundation launched a programme of science research grants with the aim of encouraging the research into Man’s physical and mental processes, namely in fields still largely unexplored but which warrant further scientific analysis, as Psychophysiology and Parapsychology.
Since its launch, applications to the BIAL grants have been increasing. Up to now 461 projects have been supported, involving more than 1000 researchers from 27 countries.
The approved applications have benefited from grants in amounts comprised between €5,000 and €50, 000. The amount to be granted is fixed by the Scientific board according to the needs of each project.
The supported projects have originated, until April 2013, in about 600 full papers, 172 out of which were published in indexed international journals with an average impact factor of 3.6 and a substantial number of citations (1665).
Among the BIAL Foundation fellows is worth highlighting the presence of scientists from prestigious universities from the United States, United Kingdom, Australia, Russia, Germany, Japan, France, Canada, and many others.
The BIAL grants are promoted biannually.

Reference code: PT/FB/BL-2014
Location: BF-GMS
Title:
2014 Grants
Start date: 2015-01

Reference code: PT/FB/BL-2014-373
Location: BF-GMS
Title:
373 - Multimodal Mapping of Visual Motion Perceptual Decision: Dissecting the Role of Different Motion Integration Areas in Visual Surface Reconstruction
Duration: 2016-02 - 2017-10
Researcher(s):
Miguel de Sá e Sousa de Castelo Branco, Gabriel Nascimento Ferreira da Costa, Gilberto Silva, Joăo Valente Duarte, Ricardo Martins
Institution(s): ICNAS - Institute for Nuclear Sciences Applied to Health, Coimbra, Portugal; IBILI - Institute for Biomedical Imaging and Life Sciences, Coimbra (Portugal)
Contents: Contents:
Application form
Correspondence
Progress report
Final report
Articles
Author: Castelo-Branco, M.
Secondary author(s):
Costa, G., Silva, G., Duarte, J., Martins, R.
Number of reproductions:
1
Keywords:
Motion perception / Decision-making / Perceptual Ambiguity / Decision Models / Psychophysiology

Reference code: PT/FB/BL-2014-373.06
Location: BF-GMS
Title:
Interhemispheric binding of ambiguous visual motion is associated with changes in beta oscillatory activity but not with gamma range synchrony
Publication year: 2017
URL:
http://www.mitpressjournals.org/doi/abs/10.1162/jocn_a_01158?url_ver=Z39.88-2003&rfr_id=ori:rid:crossref.org&rfr_dat=cr_pub%3dpubmed
Abstract/Results: ABSTRACT:
In vision, perceptual features are processed in several regions distributed across the brain. Yet, the brain achieves a coherent perception of visual scenes and objects through integration of these features, which are encoded in spatially segregated brain areas. How the brain seamlessly achieves this accurate integration is currently unknown and is referred to as the "binding problem." Among the proposed mechanisms meant to resolve the binding problem, the binding-by-synchrony hypothesis proposes that binding is carried out by the synchronization of distant neuronal assemblies. This study aimed at providing a critical test to the binding-by-synchrony hypothesis by evaluating long-range connectivity using EEG during a motion integration visual task that entails binding across hemispheres. Our results show that large-scale perceptual binding is not associated with long-range interhemispheric gamma synchrony. However, distinct perceptual interpretations were found to correlate with changes in beta power. Increased beta activity was observed during binding under ambiguous conditions and originates mainly from parietal regions. These findings reveal that the visual experience of binding can be identified by distinct signatures of oscillatory activity, regardless of long-range gamma synchrony, suggesting that such type of synchrony does not underlie perceptual binding.
Accessibility: Document exists in file
Copyright/Reproduction:
By permission
Language:
eng
Author:
Costa, G. N.
Secondary author(s):
Duarte, J. V., Martins, R., Wibral, M., Castelo-Branco, M.
Document type:
Article
Number of reproductions:
1
Percentiles:
7
Reference:
Costa, G. N., Duarte, J. V., Martins, R., Wibral, M., & Castelo-Branco, M. (2017). Interhemispheric binding of ambiguous visual motion is associated with changes in beta oscillatory activity but not with gamma range synchrony. Journal of Cognitive Neuroscience, 29(11), 1829-1844. https://doi.org/10.1162/jocn_a_01158
2-year Impact Factor: 3.468|2017
Times cited: 7|2024-02-08
Indexed document: Yes
Quartile: Q2
Keywords: Perception / Visual motion
DocumentPivotal role of hMT+ in long-range disambiguation of interhemispheric bistable surface motion2017

Reference code: PT/FB
Entity holding: BIAL Foundation
Location: S. Mamede do Coronado
Title:
BIAL Foundation Archive
Start date: 1994
History:
The BIAL Foundation was created in 1994 by Laboratórios BIAL in conjunction with the Council of Rectors of Portuguese Universities. BIAL’s Foundation mission is to foster the scientific study of Man from both the physical and spiritual perspectives.
Along the years the BIAL Foundation has developed an important relationship with the scientific community, first in Portugal and after worldwide. Today it is an institution of reference which aims to stimulate new researches that may help people, promote more health and contribute to new milestones to gain access to knowledge.
Among its activities the BIAL Foundation manages the BIAL Award, created in 1984, one of the most important awards in the Health field in Europe. The BIAL Award rewards both the basic and the clinical research distinguishing works of major impact in medical research.
The BIAL Foundation also assigns Scientific Research Scholarships for the study of neurophysiological and mental health in people, arousing the interest of researchers in the areas of Psychophysiology and Parapsychology.
To date the BIAL Foundation has supported 461 projects, more than 1000 researchers, with research groups in twenty-seven countries, resulting, until April 2013, in about 600 full papers, out of which 172 published in indexed international journals with an average impact factor of 3.6 and a substantial number of citations (1665).
Since 1996 the BIAL Foundation organizes the Symposia entitled "Behind and Beyond the Brain", a Forum that gathers well renowned neurosciences speakers and the BIAL Foundation Fellows which are spread around the world.
Classified as an institution of public utility, the BIAL Foundation includes among its patrons the Portuguese President, the Portuguese Universities Rectors' Council and the Portuguese Medical Association.
URL: http://www.bial.com/pt/
Accessibility: By permission

Reference code: PT/FB/BL
Entity holding: BIAL Foundation
Title: BIAL Grants
Start date: 1994
History:
In 1994 the BIAL Foundation launched a programme of science research grants with the aim of encouraging the research into Man’s physical and mental processes, namely in fields still largely unexplored but which warrant further scientific analysis, as Psychophysiology and Parapsychology.
Since its launch, applications to the BIAL grants have been increasing. Up to now 461 projects have been supported, involving more than 1000 researchers from 27 countries.
The approved applications have benefited from grants in amounts comprised between €5,000 and €50, 000. The amount to be granted is fixed by the Scientific board according to the needs of each project.
The supported projects have originated, until April 2013, in about 600 full papers, 172 out of which were published in indexed international journals with an average impact factor of 3.6 and a substantial number of citations (1665).
Among the BIAL Foundation fellows is worth highlighting the presence of scientists from prestigious universities from the United States, United Kingdom, Australia, Russia, Germany, Japan, France, Canada, and many others.
The BIAL grants are promoted biannually.

Reference code: PT/FB/BL-2014
Location: BF-GMS
Title:
2014 Grants
Start date: 2015-01

Reference code: PT/FB/BL-2014-373
Location: BF-GMS
Title:
373 - Multimodal Mapping of Visual Motion Perceptual Decision: Dissecting the Role of Different Motion Integration Areas in Visual Surface Reconstruction
Duration: 2016-02 - 2017-10
Researcher(s):
Miguel de Sá e Sousa de Castelo Branco, Gabriel Nascimento Ferreira da Costa, Gilberto Silva, Joăo Valente Duarte, Ricardo Martins
Institution(s): ICNAS - Institute for Nuclear Sciences Applied to Health, Coimbra, Portugal; IBILI - Institute for Biomedical Imaging and Life Sciences, Coimbra (Portugal)
Contents: Contents:
Application form
Correspondence
Progress report
Final report
Articles
Author: Castelo-Branco, M.
Secondary author(s):
Costa, G., Silva, G., Duarte, J., Martins, R.
Number of reproductions:
1
Keywords:
Motion perception / Decision-making / Perceptual Ambiguity / Decision Models / Psychophysiology

Reference code: PT/FB/BL-2014-373.07
Location: BF-GMS
Title:
Pivotal role of hMT+ in long-range disambiguation of interhemispheric bistable surface motion
Publication year: 2017
URL:
http://onlinelibrary.wiley.com/doi/10.1002/hbm.23701/abstract;jsessionid=B647FF44A05DF816D3295CE4E21A1540.f04t02
Abstract/Results: ABSTRACT:
It remains an open question whether long-range disambiguation of ambiguous surface motion can be achieved in early visual cortex or instead in higher level regions, which concerns object/surface segmentation/integration mechanisms. We used a bistable moving stimulus that can be perceived as a pattern comprehending both visual hemi-fields moving coherently downward or as two widely segregated nonoverlapping component objects (in each visual hemi-field) moving separately inward. This paradigm requires long-range integration across the vertical meridian leading to interhemispheric binding. Our fMRI study (n=30) revealed a close relation between activity in hMT+ and perceptual switches involving interhemispheric segregation/integration of motion signals, crucially under nonlocal conditions where components do not overlap and belong to distinct hemispheres. Higher signal changes were found in hMT+ in response to spatially segregated component (incoherent) percepts than to pattern (coherent) percepts. This did not occur in early visual cortex, unlike apparent motion, which does not entail surface segmentation. We also identified a role for top–down mechanisms in state transitions. Deconvolution analysis of switch-related changes revealed prefrontal, insula, and cingulate areas, with the right superior parietal lobule (SPL) being particularly involved. We observed that directed influences could emerge either from left or right hMT+ during bistable motion integration/segregation. SPL also exhibited significant directed functional connectivity with hMT+, during perceptual state maintenance (Granger causality analysis). Our results suggest that long-range interhemispheric binding of ambiguous motion representations mainly reflect bottom–up processes from hMT+ during perceptual state maintenance. In contrast, state transitions maybe influenced by high-level regions such as the SPL
Accessibility: Document exists in file
Copyright/Reproduction:
By permission
Language:
eng
Author:
Duarte, J. V.
Secondary author(s):
Costa, G. N., Martins, R., Castelo-Branco, M.
Document type:
Article
Number of reproductions:
1
Percentiles:
7
Reference:
Duarte, J. V., Costa, G. N., Martins, R., & Castelo-Branco, M. (2017). Pivotal role of hMT+ in long-range disambiguation of interhemispheric bistable surface motion. Human Brain Mapping, 38, 4882-4897. https://doi.org/10.1002/hbm.23701
2-year Impact Factor: 4.927|2017
Times cited: 11|2024-02-08
Indexed document: Yes
Quartile: Q1
Keywords: Connectivity / Decision-making / Functional magnetic resonance imaging (fMRI) / Interhemispheric integration / Visual motion
DocumentTribal love: the neural correlates of passionate engagement in football fans2017

Reference code: PT/FB
Entity holding: BIAL Foundation
Location: S. Mamede do Coronado
Title:
BIAL Foundation Archive
Start date: 1994
History:
The BIAL Foundation was created in 1994 by Laboratórios BIAL in conjunction with the Council of Rectors of Portuguese Universities. BIAL’s Foundation mission is to foster the scientific study of Man from both the physical and spiritual perspectives.
Along the years the BIAL Foundation has developed an important relationship with the scientific community, first in Portugal and after worldwide. Today it is an institution of reference which aims to stimulate new researches that may help people, promote more health and contribute to new milestones to gain access to knowledge.
Among its activities the BIAL Foundation manages the BIAL Award, created in 1984, one of the most important awards in the Health field in Europe. The BIAL Award rewards both the basic and the clinical research distinguishing works of major impact in medical research.
The BIAL Foundation also assigns Scientific Research Scholarships for the study of neurophysiological and mental health in people, arousing the interest of researchers in the areas of Psychophysiology and Parapsychology.
To date the BIAL Foundation has supported 461 projects, more than 1000 researchers, with research groups in twenty-seven countries, resulting, until April 2013, in about 600 full papers, out of which 172 published in indexed international journals with an average impact factor of 3.6 and a substantial number of citations (1665).
Since 1996 the BIAL Foundation organizes the Symposia entitled "Behind and Beyond the Brain", a Forum that gathers well renowned neurosciences speakers and the BIAL Foundation Fellows which are spread around the world.
Classified as an institution of public utility, the BIAL Foundation includes among its patrons the Portuguese President, the Portuguese Universities Rectors' Council and the Portuguese Medical Association.
URL: http://www.bial.com/pt/
Accessibility: By permission

Reference code: PT/FB/BL
Entity holding: BIAL Foundation
Title: BIAL Grants
Start date: 1994
History:
In 1994 the BIAL Foundation launched a programme of science research grants with the aim of encouraging the research into Man’s physical and mental processes, namely in fields still largely unexplored but which warrant further scientific analysis, as Psychophysiology and Parapsychology.
Since its launch, applications to the BIAL grants have been increasing. Up to now 461 projects have been supported, involving more than 1000 researchers from 27 countries.
The approved applications have benefited from grants in amounts comprised between €5,000 and €50, 000. The amount to be granted is fixed by the Scientific board according to the needs of each project.
The supported projects have originated, until April 2013, in about 600 full papers, 172 out of which were published in indexed international journals with an average impact factor of 3.6 and a substantial number of citations (1665).
Among the BIAL Foundation fellows is worth highlighting the presence of scientists from prestigious universities from the United States, United Kingdom, Australia, Russia, Germany, Japan, France, Canada, and many others.
The BIAL grants are promoted biannually.

Reference code: PT/FB/BL-2014
Location: BF-GMS
Title:
2014 Grants
Start date: 2015-01

Reference code: PT/FB/BL-2014-373
Location: BF-GMS
Title:
373 - Multimodal Mapping of Visual Motion Perceptual Decision: Dissecting the Role of Different Motion Integration Areas in Visual Surface Reconstruction
Duration: 2016-02 - 2017-10
Researcher(s):
Miguel de Sá e Sousa de Castelo Branco, Gabriel Nascimento Ferreira da Costa, Gilberto Silva, Joăo Valente Duarte, Ricardo Martins
Institution(s): ICNAS - Institute for Nuclear Sciences Applied to Health, Coimbra, Portugal; IBILI - Institute for Biomedical Imaging and Life Sciences, Coimbra (Portugal)
Contents: Contents:
Application form
Correspondence
Progress report
Final report
Articles
Author: Castelo-Branco, M.
Secondary author(s):
Costa, G., Silva, G., Duarte, J., Martins, R.
Number of reproductions:
1
Keywords:
Motion perception / Decision-making / Perceptual Ambiguity / Decision Models / Psychophysiology

Reference code: PT/FB/BL-2014-373.08
Location: BF-GMS
Title:
Tribal love: the neural correlates of passionate engagement in football fans
Publication year: 2017
URL:
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5460049/
Abstract/Results: ABSTRACT:
The tribal character of the affective link between football fans and their teams is a well-recognized phenomenon. Other forms of love such as romantic or maternal attachment have previously been studied from a neuroimaging point of view. Here we aimed to investigate the neural basis of this tribal form of love, which implies both the feeling of belongingness and rivalry against opposing teams. A pool of 56 participants was submitted to an fMRI experimental design involving the presentation of winning and losing football moments of their loved, rival or neutral teams. We found recruitment of amygdala and reward regions, including the ventral tegmental area (VTA) and substantia nigra (SN), as well as other limbic regions involved in emotional cognition, for 'positive vs neutral' and 'positive vs negative' conditions. The latter contrast was correlated with neuropsychological scores of fanaticism in the amygdala and regions within the reward system, as the VTA and SN. The observation of increased response patterns in critical components of the reward system, in particular for positive content related to the loved team, suggests that this kind of non-romantic love reflects a specific arousal and motivational state, which is biased for emotional learning of positive outcomes.
Accessibility: Document exists in file
Language:
eng
Author:
Duarte, I. C.
Secondary author(s):
Afonso, S., Jorge, H., Cayolla, R., Ferreira, C., Castelo-Branco, M.
Document type:
Article
Number of reproductions:
1
Percentiles:
7
Reference:
Duarte, I. C., Afonso, S., Jorge, H., Cayolla, R., Ferreira, C., & Castelo-Branco, M. (2017). Tribal love: the neural correlates of passionate engagement in football fans. Social Cognitive and Affective Neuroscience, 12(5), 718-728. https://doi.org/10.1093/scan/nsx003
2-year Impact Factor: 3.500|2017
Times cited: 13|2024-02-08
Indexed document: Yes
Quartile: Q1
Keywords: Amygdala / Football fan / Non-romantic love / Reward system / Substantia nigra / Ventral tegmental area

Tribal love: the neural correlates of passionate engagement in football fans

Tribal love: the neural correlates of passionate engagement in football fans
DocumentPure visual imagery as a potential approach to achieve three classes of control for implementation of BCI in non-motor disorders2017

Reference code: PT/FB
Entity holding: BIAL Foundation
Location: S. Mamede do Coronado
Title:
BIAL Foundation Archive
Start date: 1994
History:
The BIAL Foundation was created in 1994 by Laboratórios BIAL in conjunction with the Council of Rectors of Portuguese Universities. BIAL’s Foundation mission is to foster the scientific study of Man from both the physical and spiritual perspectives.
Along the years the BIAL Foundation has developed an important relationship with the scientific community, first in Portugal and after worldwide. Today it is an institution of reference which aims to stimulate new researches that may help people, promote more health and contribute to new milestones to gain access to knowledge.
Among its activities the BIAL Foundation manages the BIAL Award, created in 1984, one of the most important awards in the Health field in Europe. The BIAL Award rewards both the basic and the clinical research distinguishing works of major impact in medical research.
The BIAL Foundation also assigns Scientific Research Scholarships for the study of neurophysiological and mental health in people, arousing the interest of researchers in the areas of Psychophysiology and Parapsychology.
To date the BIAL Foundation has supported 461 projects, more than 1000 researchers, with research groups in twenty-seven countries, resulting, until April 2013, in about 600 full papers, out of which 172 published in indexed international journals with an average impact factor of 3.6 and a substantial number of citations (1665).
Since 1996 the BIAL Foundation organizes the Symposia entitled "Behind and Beyond the Brain", a Forum that gathers well renowned neurosciences speakers and the BIAL Foundation Fellows which are spread around the world.
Classified as an institution of public utility, the BIAL Foundation includes among its patrons the Portuguese President, the Portuguese Universities Rectors' Council and the Portuguese Medical Association.
URL: http://www.bial.com/pt/
Accessibility: By permission

Reference code: PT/FB/BL
Entity holding: BIAL Foundation
Title: BIAL Grants
Start date: 1994
History:
In 1994 the BIAL Foundation launched a programme of science research grants with the aim of encouraging the research into Man’s physical and mental processes, namely in fields still largely unexplored but which warrant further scientific analysis, as Psychophysiology and Parapsychology.
Since its launch, applications to the BIAL grants have been increasing. Up to now 461 projects have been supported, involving more than 1000 researchers from 27 countries.
The approved applications have benefited from grants in amounts comprised between €5,000 and €50, 000. The amount to be granted is fixed by the Scientific board according to the needs of each project.
The supported projects have originated, until April 2013, in about 600 full papers, 172 out of which were published in indexed international journals with an average impact factor of 3.6 and a substantial number of citations (1665).
Among the BIAL Foundation fellows is worth highlighting the presence of scientists from prestigious universities from the United States, United Kingdom, Australia, Russia, Germany, Japan, France, Canada, and many others.
The BIAL grants are promoted biannually.

Reference code: PT/FB/BL-2014
Location: BF-GMS
Title:
2014 Grants
Start date: 2015-01

Reference code: PT/FB/BL-2014-373
Location: BF-GMS
Title:
373 - Multimodal Mapping of Visual Motion Perceptual Decision: Dissecting the Role of Different Motion Integration Areas in Visual Surface Reconstruction
Duration: 2016-02 - 2017-10
Researcher(s):
Miguel de Sá e Sousa de Castelo Branco, Gabriel Nascimento Ferreira da Costa, Gilberto Silva, Joăo Valente Duarte, Ricardo Martins
Institution(s): ICNAS - Institute for Nuclear Sciences Applied to Health, Coimbra, Portugal; IBILI - Institute for Biomedical Imaging and Life Sciences, Coimbra (Portugal)
Contents: Contents:
Application form
Correspondence
Progress report
Final report
Articles
Author: Castelo-Branco, M.
Secondary author(s):
Costa, G., Silva, G., Duarte, J., Martins, R.
Number of reproductions:
1
Keywords:
Motion perception / Decision-making / Perceptual Ambiguity / Decision Models / Psychophysiology

Reference code: PT/FB/BL-2014-373.09
Location: BF-GMS
Title:
Pure visual imagery as a potential approach to achieve three classes of control for implementation of BCI in non-motor disorders
Publication year: 2017
URL:
http://iopscience.iop.org/article/10.1088/1741-2552/aa70ac/meta;jsessionid=73FBE7D31C926650C1229943B52A92FD.ip-10-40-2-120
Abstract/Results: ABSTRACT:
OBJECTIVE:
The achievement of multiple instances of control with the same type of mental strategy represents a way to improve flexibility of brain-computer interface (BCI) systems. Here we test the hypothesis that pure visual motion imagery of an external actuator can be used as a tool to achieve three classes of electroencephalographic (EEG) based control, which might be useful in attention disorders.
APPROACH:
We hypothesize that different numbers of imagined motion alternations lead to distinctive signals, as predicted by distinct motion patterns. Accordingly, a distinct number of alternating sensory/perceptual signals would lead to distinct neural responses as previously demonstrated using functional magnetic resonance imaging (fMRI). We anticipate that differential modulations should also be observed in the EEG domain. EEG recordings were obtained from twelve participants using three imagery tasks: imagery of a static dot, imagery of a dot with two opposing motions in the vertical axis (two motion directions) and imagery of a dot with four opposing motions in vertical or horizontal axes (four directions). The data were analysed offline.
MAIN RESULTS:
An increase of alpha-band power was found in frontal and central channels as a result of visual motion imagery tasks when compared with static dot imagery, in contrast with the expected posterior alpha decreases found during simple visual stimulation. The successful classification and discrimination between the three imagery tasks confirmed that three different classes of control based on visual motion imagery can be achieved. The classification approach was based on a support vector machine (SVM) and on the alpha-band relative spectral power of a small group of six frontal and central channels. Patterns of alpha activity, as captured by single-trial SVM closely reflected imagery properties, in particular the number of imagined motion alternations.
SIGNIFICANCE:
We found a new mental task based on visual motion imagery with potential for the implementation of multiclass (3) BCIs. Our results are consistent with the notion that frontal alpha synchronization is related with high internal processing demands, changing with the number of alternation levels during imagery. Together, these findings suggest the feasibility of pure visual motion imagery tasks as a strategy to achieve multiclass control systems with potential for BCI and in particular, neurofeedback applications in non-motor (attentional) disorders.
Accessibility: Document exists in file
Copyright/Reproduction:
By permission
Language:
eng
Author:
Sousa, T.
Secondary author(s):
Amaral, C., Andrade, J., Pires, G., Nunes, U., Castelo-Branco, M.
Document type:
Article
Number of reproductions:
1
Percentiles:
6
Reference:
Sousa, T., Amaral, C., Andrade, J., Pires, G., Nunes, U., & Castelo-Branco, M. (2017). Pure visual imagery as a potential approach to achieve three classes of control for implementation of BCI in non-motor disorders. Journal of Neural Engineering, 14(4):046026. https://doi.org/10.1088/1741-2552/aa70ac
2-year Impact Factor: 3.920|2017
Times cited: 23|2024-02-08
Indexed document: Yes
Quartile: Q1
Keywords: Visual motion imagery / Multiclass control / Electroencephalogram (EEG) / Brain-computer interface (BCI)
DocumentCortical functional topography of high-frequency oscillations relates to perceptual decision: an Intracranial study2017

Reference code: PT/FB
Entity holding: BIAL Foundation
Location: S. Mamede do Coronado
Title:
BIAL Foundation Archive
Start date: 1994
History:
The BIAL Foundation was created in 1994 by Laboratórios BIAL in conjunction with the Council of Rectors of Portuguese Universities. BIAL’s Foundation mission is to foster the scientific study of Man from both the physical and spiritual perspectives.
Along the years the BIAL Foundation has developed an important relationship with the scientific community, first in Portugal and after worldwide. Today it is an institution of reference which aims to stimulate new researches that may help people, promote more health and contribute to new milestones to gain access to knowledge.
Among its activities the BIAL Foundation manages the BIAL Award, created in 1984, one of the most important awards in the Health field in Europe. The BIAL Award rewards both the basic and the clinical research distinguishing works of major impact in medical research.
The BIAL Foundation also assigns Scientific Research Scholarships for the study of neurophysiological and mental health in people, arousing the interest of researchers in the areas of Psychophysiology and Parapsychology.
To date the BIAL Foundation has supported 461 projects, more than 1000 researchers, with research groups in twenty-seven countries, resulting, until April 2013, in about 600 full papers, out of which 172 published in indexed international journals with an average impact factor of 3.6 and a substantial number of citations (1665).
Since 1996 the BIAL Foundation organizes the Symposia entitled "Behind and Beyond the Brain", a Forum that gathers well renowned neurosciences speakers and the BIAL Foundation Fellows which are spread around the world.
Classified as an institution of public utility, the BIAL Foundation includes among its patrons the Portuguese President, the Portuguese Universities Rectors' Council and the Portuguese Medical Association.
URL: http://www.bial.com/pt/
Accessibility: By permission

Reference code: PT/FB/BL
Entity holding: BIAL Foundation
Title: BIAL Grants
Start date: 1994
History:
In 1994 the BIAL Foundation launched a programme of science research grants with the aim of encouraging the research into Man’s physical and mental processes, namely in fields still largely unexplored but which warrant further scientific analysis, as Psychophysiology and Parapsychology.
Since its launch, applications to the BIAL grants have been increasing. Up to now 461 projects have been supported, involving more than 1000 researchers from 27 countries.
The approved applications have benefited from grants in amounts comprised between €5,000 and €50, 000. The amount to be granted is fixed by the Scientific board according to the needs of each project.
The supported projects have originated, until April 2013, in about 600 full papers, 172 out of which were published in indexed international journals with an average impact factor of 3.6 and a substantial number of citations (1665).
Among the BIAL Foundation fellows is worth highlighting the presence of scientists from prestigious universities from the United States, United Kingdom, Australia, Russia, Germany, Japan, France, Canada, and many others.
The BIAL grants are promoted biannually.

Reference code: PT/FB/BL-2014
Location: BF-GMS
Title:
2014 Grants
Start date: 2015-01

Reference code: PT/FB/BL-2014-373
Location: BF-GMS
Title:
373 - Multimodal Mapping of Visual Motion Perceptual Decision: Dissecting the Role of Different Motion Integration Areas in Visual Surface Reconstruction
Duration: 2016-02 - 2017-10
Researcher(s):
Miguel de Sá e Sousa de Castelo Branco, Gabriel Nascimento Ferreira da Costa, Gilberto Silva, Joăo Valente Duarte, Ricardo Martins
Institution(s): ICNAS - Institute for Nuclear Sciences Applied to Health, Coimbra, Portugal; IBILI - Institute for Biomedical Imaging and Life Sciences, Coimbra (Portugal)
Contents: Contents:
Application form
Correspondence
Progress report
Final report
Articles
Author: Castelo-Branco, M.
Secondary author(s):
Costa, G., Silva, G., Duarte, J., Martins, R.
Number of reproductions:
1
Keywords:
Motion perception / Decision-making / Perceptual Ambiguity / Decision Models / Psychophysiology

Reference code: PT/FB/BL-2014-373.17
Location: BF-GMS
Title:
Cortical functional topography of high-frequency oscillations relates to perceptual decision: an Intracranial study
Publication year: 2017
URL:
http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0186428
Abstract/Results: ABSTRACT:
High-frequency activity (HFA) is believed to subserve a functional role in cognition, but these patterns are often not accessible to scalp EEG recordings. Intracranial studies provide a unique opportunity to link the all-encompassing range of high-frequency patterns with holistic perception. We tested whether the functional topography of HFAs (up to 250Hz) is related to perceptual decision-making. Human intracortical data were recorded (6 subjects; >250channels) during an ambiguous object-recognition task. We found a spatial topography of HFAs reflecting processing anterior dorsal and ventral streams, linked to decision independently of the type of processed object/stimulus category. Three distinct regional fingerprints could be identified, with lower gamma frequency patterns (<45Hz) dominating in the anterior semantic ventral object processing and dorsoventral integrating networks and evolving later, during perceptual decision phases, than early sensory posterior patterns (60-250Hz). This suggests that accurate object recognition/perceptual decision-making is related to distinct spatiotemporal signatures in the low gamma frequency range.
Accessibility: Document exists in file
Language:
eng
Author:
Castelhano, J.
Secondary author(s):
Duarte, I. C., Abuhaiba, S. I., Rito, M., Sales, F., Castelo-Branco, M.
Document type:
Article
Number of reproductions:
1
Percentiles:
7
Reference:
Castelhano, J., Duarte, I. C., Abuhaiba, S. I., Rito, M., Sales, F., & Castelo-Branco, M. (2017). Cortical functional topography of high-frequency gamma activity relates to perceptual decision: an Intracranial study. PLoS ONE, 12(10): e0186428. https://doi.org/10.1371/journal.pone.0186428
2-year Impact Factor: 2.766|2017
Times cited: 7|2024-02-08
Indexed document: Yes
Quartile: Q1

Cortical functional topography of high-frequency oscillations relates to perceptual decision: an Intracranial study

Cortical functional topography of high-frequency oscillations relates to perceptual decision: an Intracranial study
DocumentStimulus dependent neural oscillatory patterns show reliable statistical identification of Autism Spectrum Disorder in a face perceptual decision task2018

Reference code: PT/FB
Entity holding: BIAL Foundation
Location: S. Mamede do Coronado
Title:
BIAL Foundation Archive
Start date: 1994
History:
The BIAL Foundation was created in 1994 by Laboratórios BIAL in conjunction with the Council of Rectors of Portuguese Universities. BIAL’s Foundation mission is to foster the scientific study of Man from both the physical and spiritual perspectives.
Along the years the BIAL Foundation has developed an important relationship with the scientific community, first in Portugal and after worldwide. Today it is an institution of reference which aims to stimulate new researches that may help people, promote more health and contribute to new milestones to gain access to knowledge.
Among its activities the BIAL Foundation manages the BIAL Award, created in 1984, one of the most important awards in the Health field in Europe. The BIAL Award rewards both the basic and the clinical research distinguishing works of major impact in medical research.
The BIAL Foundation also assigns Scientific Research Scholarships for the study of neurophysiological and mental health in people, arousing the interest of researchers in the areas of Psychophysiology and Parapsychology.
To date the BIAL Foundation has supported 461 projects, more than 1000 researchers, with research groups in twenty-seven countries, resulting, until April 2013, in about 600 full papers, out of which 172 published in indexed international journals with an average impact factor of 3.6 and a substantial number of citations (1665).
Since 1996 the BIAL Foundation organizes the Symposia entitled "Behind and Beyond the Brain", a Forum that gathers well renowned neurosciences speakers and the BIAL Foundation Fellows which are spread around the world.
Classified as an institution of public utility, the BIAL Foundation includes among its patrons the Portuguese President, the Portuguese Universities Rectors' Council and the Portuguese Medical Association.
URL: http://www.bial.com/pt/
Accessibility: By permission

Reference code: PT/FB/BL
Entity holding: BIAL Foundation
Title: BIAL Grants
Start date: 1994
History:
In 1994 the BIAL Foundation launched a programme of science research grants with the aim of encouraging the research into Man’s physical and mental processes, namely in fields still largely unexplored but which warrant further scientific analysis, as Psychophysiology and Parapsychology.
Since its launch, applications to the BIAL grants have been increasing. Up to now 461 projects have been supported, involving more than 1000 researchers from 27 countries.
The approved applications have benefited from grants in amounts comprised between €5,000 and €50, 000. The amount to be granted is fixed by the Scientific board according to the needs of each project.
The supported projects have originated, until April 2013, in about 600 full papers, 172 out of which were published in indexed international journals with an average impact factor of 3.6 and a substantial number of citations (1665).
Among the BIAL Foundation fellows is worth highlighting the presence of scientists from prestigious universities from the United States, United Kingdom, Australia, Russia, Germany, Japan, France, Canada, and many others.
The BIAL grants are promoted biannually.

Reference code: PT/FB/BL-2014
Location: BF-GMS
Title:
2014 Grants
Start date: 2015-01

Reference code: PT/FB/BL-2014-373
Location: BF-GMS
Title:
373 - Multimodal Mapping of Visual Motion Perceptual Decision: Dissecting the Role of Different Motion Integration Areas in Visual Surface Reconstruction
Duration: 2016-02 - 2017-10
Researcher(s):
Miguel de Sá e Sousa de Castelo Branco, Gabriel Nascimento Ferreira da Costa, Gilberto Silva, Joăo Valente Duarte, Ricardo Martins
Institution(s): ICNAS - Institute for Nuclear Sciences Applied to Health, Coimbra, Portugal; IBILI - Institute for Biomedical Imaging and Life Sciences, Coimbra (Portugal)
Contents: Contents:
Application form
Correspondence
Progress report
Final report
Articles
Author: Castelo-Branco, M.
Secondary author(s):
Costa, G., Silva, G., Duarte, J., Martins, R.
Number of reproductions:
1
Keywords:
Motion perception / Decision-making / Perceptual Ambiguity / Decision Models / Psychophysiology

Reference code: PT/FB/BL-2014-373.18
Location: BF-GMS
Title:
Stimulus dependent neural oscillatory patterns show reliable statistical identification of Autism Spectrum Disorder in a face perceptual decision task
Publication year: 2018
URL:
https://www.sciencedirect.com/science/article/pii/S1388245718300981
Abstract/Results: ABSTRACT:
OBJECTIVE
Electroencephalographic biomarkers have been widely investigated in autism, in the search for diagnostic, prognostic and therapeutic outcome measures. Here we took advantage of the information available in temporal oscillatory patterns evoked by simple perceptual decisions to investigate whether stimulus dependent oscillatory signatures can be used as potential biomarkers in Autism spectrum disorder (ASD).
METHODS
We studied an extensive set of stimuli (9 categories of faces) and performed data driven classification (Support vector machine, SVM) of ASD vs. Controls with features based on the EEG power responses. We carried out an extensive time-frequency and synchrony analysis of distinct face categories requiring different processing mechanisms in terms of non-holistic vs. holistic processing.
RESULTS
We found that the neuronal oscillatory responses of low gamma frequency band, locked to photographic and abstract two-tone (Mooney) face stimulus presentation are decreased in ASD vs. the control group. We also found decreased time-frequency (TF) responses in the beta band in ASD after 350ms, possibly related to motor preparation. On the other hand, synchrony in the 30-45Hz band showed a distinct spatial pattern in ASD. These power changes enabled accurate classification of ASD with an SVM approach. SVM accuracy was approximately 85%. ROC curves showed about 94% AUC (area under the curve). Combination of Mooney and Photographic face stimuli evoked features enabled a better separation between groups, reaching an AUC of 98.6%.
CONCLUSIONS
We identified a relative decrease in EEG responses to face stimuli in ASD in the beta (15-30Hz; >350ms) and gamma (30-45Hz; 55-80Hz; 50-350ms) frequency ranges. These can be used as input of a machine learning approach to separate between groups with high accuracy.
SIGNIFICANCE
Future studies can use EEG time-frequency patterns evoked by particular types of faces as a diagnostic biomarker and potentially as outcome measures in therapeutic trials.
Accessibility: Document exists in file
Copyright/Reproduction:
By permission
Language:
eng
Author:
Castelhano, J.
Secondary author(s):
Tavares, P., Mouga, S., Oliveira, G., Castelo-Branco, M.
Document type:
Article
Number of reproductions:
1
Percentiles:
7
Reference:
Castelhano, J., Tavares, P., Mouga, S., Oliveira, G., & Castelo-Branco, M. (2018). Stimulus dependent neural oscillatory patterns show reliable statistical identification of Autism Spectrum Disorder in a face perceptual decision task. Clinical Neurophysiology, 129(5), 981-989. https://doi.org/10.1016/j.clinph.2018.01.072
2-year Impact Factor: 3.675|2018
Times cited: 11|2024-02-09
Indexed document: Yes
Quartile: Q2
Keywords: ASD / Gamma-band / Holistic processing / EEG / Biomarker / SVM classification
DocumentTracking perceptual decision mechanisms through changes in interhemispheric functional connectivity in human visual cortex2019

Reference code: PT/FB
Entity holding: BIAL Foundation
Location: S. Mamede do Coronado
Title:
BIAL Foundation Archive
Start date: 1994
History:
The BIAL Foundation was created in 1994 by Laboratórios BIAL in conjunction with the Council of Rectors of Portuguese Universities. BIAL’s Foundation mission is to foster the scientific study of Man from both the physical and spiritual perspectives.
Along the years the BIAL Foundation has developed an important relationship with the scientific community, first in Portugal and after worldwide. Today it is an institution of reference which aims to stimulate new researches that may help people, promote more health and contribute to new milestones to gain access to knowledge.
Among its activities the BIAL Foundation manages the BIAL Award, created in 1984, one of the most important awards in the Health field in Europe. The BIAL Award rewards both the basic and the clinical research distinguishing works of major impact in medical research.
The BIAL Foundation also assigns Scientific Research Scholarships for the study of neurophysiological and mental health in people, arousing the interest of researchers in the areas of Psychophysiology and Parapsychology.
To date the BIAL Foundation has supported 461 projects, more than 1000 researchers, with research groups in twenty-seven countries, resulting, until April 2013, in about 600 full papers, out of which 172 published in indexed international journals with an average impact factor of 3.6 and a substantial number of citations (1665).
Since 1996 the BIAL Foundation organizes the Symposia entitled "Behind and Beyond the Brain", a Forum that gathers well renowned neurosciences speakers and the BIAL Foundation Fellows which are spread around the world.
Classified as an institution of public utility, the BIAL Foundation includes among its patrons the Portuguese President, the Portuguese Universities Rectors' Council and the Portuguese Medical Association.
URL: http://www.bial.com/pt/
Accessibility: By permission

Reference code: PT/FB/BL
Entity holding: BIAL Foundation
Title: BIAL Grants
Start date: 1994
History:
In 1994 the BIAL Foundation launched a programme of science research grants with the aim of encouraging the research into Man’s physical and mental processes, namely in fields still largely unexplored but which warrant further scientific analysis, as Psychophysiology and Parapsychology.
Since its launch, applications to the BIAL grants have been increasing. Up to now 461 projects have been supported, involving more than 1000 researchers from 27 countries.
The approved applications have benefited from grants in amounts comprised between €5,000 and €50, 000. The amount to be granted is fixed by the Scientific board according to the needs of each project.
The supported projects have originated, until April 2013, in about 600 full papers, 172 out of which were published in indexed international journals with an average impact factor of 3.6 and a substantial number of citations (1665).
Among the BIAL Foundation fellows is worth highlighting the presence of scientists from prestigious universities from the United States, United Kingdom, Australia, Russia, Germany, Japan, France, Canada, and many others.
The BIAL grants are promoted biannually.

Reference code: PT/FB/BL-2014
Location: BF-GMS
Title:
2014 Grants
Start date: 2015-01

Reference code: PT/FB/BL-2014-373
Location: BF-GMS
Title:
373 - Multimodal Mapping of Visual Motion Perceptual Decision: Dissecting the Role of Different Motion Integration Areas in Visual Surface Reconstruction
Duration: 2016-02 - 2017-10
Researcher(s):
Miguel de Sá e Sousa de Castelo Branco, Gabriel Nascimento Ferreira da Costa, Gilberto Silva, Joăo Valente Duarte, Ricardo Martins
Institution(s): ICNAS - Institute for Nuclear Sciences Applied to Health, Coimbra, Portugal; IBILI - Institute for Biomedical Imaging and Life Sciences, Coimbra (Portugal)
Contents: Contents:
Application form
Correspondence
Progress report
Final report
Articles
Author: Castelo-Branco, M.
Secondary author(s):
Costa, G., Silva, G., Duarte, J., Martins, R.
Number of reproductions:
1
Keywords:
Motion perception / Decision-making / Perceptual Ambiguity / Decision Models / Psychophysiology

Reference code: PT/FB/BL-2014-373.21
Location: BF-GMS
Title:
Tracking perceptual decision mechanisms through changes in interhemispheric functional connectivity in human visual cortex
Publication year: 2019
URL:
https://www.nature.com/articles/s41598-018-37822-x
Abstract/Results: ABSTRACT:
The role of long-range integration mechanisms underlying visual perceptual binding and their link to interhemispheric functional connectivity, as measured by fMRI, remains elusive. Only inferences on anatomical organization from resting state data paradigms not requiring coherent binding have been achieved. Here, we used a paradigm that allowed us to study such relation between perceptual interpretation and functional connectivity under bistable interhemispheric binding vs. non-binding of visual surfaces. Binding occurs by long-range perceptual integration of motion into a single object across hemifields and non-binding reflects opponent segregation of distinct moving surfaces into each hemifield. We hypothesized that perceptual integration vs. segregation of surface motion, which is achieved in visual area hMT+, is modulated by changes in interhemispheric connectivity in this region. Using 7T fMRI, we found that perceptual long-range integration of bistable motion can be tracked by changes in interhemispheric functional connectivity between left/right hMT+. Increased connectivity was tightly related with long-range perceptual integration. Our results indicate that hMT+ interhemispheric functional connectivity reflects perceptual decision, suggesting its pivotal role on long-range disambiguation of bistable physically constant surface motion. We reveal for the first time, at the scale of fMRI, a relation between interhemispheric functional connectivity and decision based perceptual binding.
Accessibility: Document exists in file
Language:
eng
Related objects:
BL-2016-207.04
Author: Sousa, T.
Secondary author(s):
Duarte, J., Costa, G. N., Kemper, V. G., Martins, R., Goebel, R., Castelo-Branco, M.
Document type:
Article
Number of reproductions:
1
Percentiles:
7
Reference:
Sousa, T., Duarte, J., Costa, G. N., Kemper, V. G., Martins, R., Goebel, R., & Castelo-Branco, M. (2019). Tracking perceptual decision mechanisms through changes in interhemispheric functional connectivity in human visual cortex. Scientific Reports, 9, Article number: 1242. https://doi.org/10.1038/s41598-018-37822-x
2-year Impact Factor: 3.998|2019
Times cited: 2|2024-02-12
Indexed document: Yes
Quartile: Q1
Keywords: Functional connectivity / Binding / Integration / Motion

Tracking perceptual decision mechanisms through changes in interhemispheric functional connectivity in human visual cortex

Tracking perceptual decision mechanisms through changes in interhemispheric functional connectivity in human visual cortex
DocumentCortical functional topography of high-frequency oscillations2017

Reference code: PT/FB
Entity holding: BIAL Foundation
Location: S. Mamede do Coronado
Title:
BIAL Foundation Archive
Start date: 1994
History:
The BIAL Foundation was created in 1994 by Laboratórios BIAL in conjunction with the Council of Rectors of Portuguese Universities. BIAL’s Foundation mission is to foster the scientific study of Man from both the physical and spiritual perspectives.
Along the years the BIAL Foundation has developed an important relationship with the scientific community, first in Portugal and after worldwide. Today it is an institution of reference which aims to stimulate new researches that may help people, promote more health and contribute to new milestones to gain access to knowledge.
Among its activities the BIAL Foundation manages the BIAL Award, created in 1984, one of the most important awards in the Health field in Europe. The BIAL Award rewards both the basic and the clinical research distinguishing works of major impact in medical research.
The BIAL Foundation also assigns Scientific Research Scholarships for the study of neurophysiological and mental health in people, arousing the interest of researchers in the areas of Psychophysiology and Parapsychology.
To date the BIAL Foundation has supported 461 projects, more than 1000 researchers, with research groups in twenty-seven countries, resulting, until April 2013, in about 600 full papers, out of which 172 published in indexed international journals with an average impact factor of 3.6 and a substantial number of citations (1665).
Since 1996 the BIAL Foundation organizes the Symposia entitled "Behind and Beyond the Brain", a Forum that gathers well renowned neurosciences speakers and the BIAL Foundation Fellows which are spread around the world.
Classified as an institution of public utility, the BIAL Foundation includes among its patrons the Portuguese President, the Portuguese Universities Rectors' Council and the Portuguese Medical Association.
URL: http://www.bial.com/pt/
Accessibility: By permission

Reference code: PT/FB/BL
Entity holding: BIAL Foundation
Title: BIAL Grants
Start date: 1994
History:
In 1994 the BIAL Foundation launched a programme of science research grants with the aim of encouraging the research into Man’s physical and mental processes, namely in fields still largely unexplored but which warrant further scientific analysis, as Psychophysiology and Parapsychology.
Since its launch, applications to the BIAL grants have been increasing. Up to now 461 projects have been supported, involving more than 1000 researchers from 27 countries.
The approved applications have benefited from grants in amounts comprised between €5,000 and €50, 000. The amount to be granted is fixed by the Scientific board according to the needs of each project.
The supported projects have originated, until April 2013, in about 600 full papers, 172 out of which were published in indexed international journals with an average impact factor of 3.6 and a substantial number of citations (1665).
Among the BIAL Foundation fellows is worth highlighting the presence of scientists from prestigious universities from the United States, United Kingdom, Australia, Russia, Germany, Japan, France, Canada, and many others.
The BIAL grants are promoted biannually.

Reference code: PT/FB/BL-2014
Location: BF-GMS
Title:
2014 Grants
Start date: 2015-01

Reference code: PT/FB/BL-2014-373
Location: BF-GMS
Title:
373 - Multimodal Mapping of Visual Motion Perceptual Decision: Dissecting the Role of Different Motion Integration Areas in Visual Surface Reconstruction
Duration: 2016-02 - 2017-10
Researcher(s):
Miguel de Sá e Sousa de Castelo Branco, Gabriel Nascimento Ferreira da Costa, Gilberto Silva, Joăo Valente Duarte, Ricardo Martins
Institution(s): ICNAS - Institute for Nuclear Sciences Applied to Health, Coimbra, Portugal; IBILI - Institute for Biomedical Imaging and Life Sciences, Coimbra (Portugal)
Contents: Contents:
Application form
Correspondence
Progress report
Final report
Articles
Author: Castelo-Branco, M.
Secondary author(s):
Costa, G., Silva, G., Duarte, J., Martins, R.
Number of reproductions:
1
Keywords:
Motion perception / Decision-making / Perceptual Ambiguity / Decision Models / Psychophysiology

Reference code: PT/FB/BL-2014-373.10
Location: BF-GMS
Title:
Cortical functional topography of high-frequency oscillations
Publication year: 2017
URL:
https://www.uc.pt/en/icnas/CIP2017/CIP2017_programme/CIP2017_abstractBook
Abstract/Results: ABSTRACT:
High-frequency oscillations (HFOs) are believed to subserve a functional role in cognition, but these patterns are often not accessible to scalp EEG recordings. Intracranial studies provide a unique opportunity to link the all-encompassing range of HFOs with holistic perception. We tested whether the functional topography of HFOs (up to 250Hz) is related to perceptual decision-making. Human intracortical data were recorded (6 subjects; >250channels) during an ambiguous object-recognition task. We found a spatial topography of HFOs reflecting processing anterior dorsal and ventral streams, linked to decision independently of the type of processed object/stimulus category. Distinct fingerprints could be identified, with lower frequency patterns (<45Hz) dominating in the anterior semantic object processing network and evolving later, during perceptual decision phases, than early sensory posterior patterns (60-250Hz). This suggests that accurate object recognition/perceptual decision-making is related to distinct spatiotemporal oscillatory signatures in the low gamma range.
Accessibility: Document exists in file
Language:
eng
Author:
Castelhano, J.
Secondary author(s):
Duarte, I., Abuhaiba, S., Rito, M., Sales, F., Castelo-Branco, M.
Document type:
Abstract book
Number of reproductions:
1
Reference:
Castelhano, J., Duarte, I., Abuhaiba, S., Rito, M., Sales, F., & Castelo-Branco, M. (2017). Cortical functional topography of high-frequency oscillations. Abstract book of the 7th Iberian Congress on Perception (p. 27). Coimbra, Portugal.
Indexed document: No
Keywords: Perception / Decision

Cortical functional topography of high-frequency oscillations

Cortical functional topography of high-frequency oscillations
DocumentHigh-resolution 7T fMRI data on the perceptual long-range segregation vs. integration of bistable moving stimuli2017

Reference code: PT/FB
Entity holding: BIAL Foundation
Location: S. Mamede do Coronado
Title:
BIAL Foundation Archive
Start date: 1994
History:
The BIAL Foundation was created in 1994 by Laboratórios BIAL in conjunction with the Council of Rectors of Portuguese Universities. BIAL’s Foundation mission is to foster the scientific study of Man from both the physical and spiritual perspectives.
Along the years the BIAL Foundation has developed an important relationship with the scientific community, first in Portugal and after worldwide. Today it is an institution of reference which aims to stimulate new researches that may help people, promote more health and contribute to new milestones to gain access to knowledge.
Among its activities the BIAL Foundation manages the BIAL Award, created in 1984, one of the most important awards in the Health field in Europe. The BIAL Award rewards both the basic and the clinical research distinguishing works of major impact in medical research.
The BIAL Foundation also assigns Scientific Research Scholarships for the study of neurophysiological and mental health in people, arousing the interest of researchers in the areas of Psychophysiology and Parapsychology.
To date the BIAL Foundation has supported 461 projects, more than 1000 researchers, with research groups in twenty-seven countries, resulting, until April 2013, in about 600 full papers, out of which 172 published in indexed international journals with an average impact factor of 3.6 and a substantial number of citations (1665).
Since 1996 the BIAL Foundation organizes the Symposia entitled "Behind and Beyond the Brain", a Forum that gathers well renowned neurosciences speakers and the BIAL Foundation Fellows which are spread around the world.
Classified as an institution of public utility, the BIAL Foundation includes among its patrons the Portuguese President, the Portuguese Universities Rectors' Council and the Portuguese Medical Association.
URL: http://www.bial.com/pt/
Accessibility: By permission

Reference code: PT/FB/BL
Entity holding: BIAL Foundation
Title: BIAL Grants
Start date: 1994
History:
In 1994 the BIAL Foundation launched a programme of science research grants with the aim of encouraging the research into Man’s physical and mental processes, namely in fields still largely unexplored but which warrant further scientific analysis, as Psychophysiology and Parapsychology.
Since its launch, applications to the BIAL grants have been increasing. Up to now 461 projects have been supported, involving more than 1000 researchers from 27 countries.
The approved applications have benefited from grants in amounts comprised between €5,000 and €50, 000. The amount to be granted is fixed by the Scientific board according to the needs of each project.
The supported projects have originated, until April 2013, in about 600 full papers, 172 out of which were published in indexed international journals with an average impact factor of 3.6 and a substantial number of citations (1665).
Among the BIAL Foundation fellows is worth highlighting the presence of scientists from prestigious universities from the United States, United Kingdom, Australia, Russia, Germany, Japan, France, Canada, and many others.
The BIAL grants are promoted biannually.

Reference code: PT/FB/BL-2014
Location: BF-GMS
Title:
2014 Grants
Start date: 2015-01

Reference code: PT/FB/BL-2014-373
Location: BF-GMS
Title:
373 - Multimodal Mapping of Visual Motion Perceptual Decision: Dissecting the Role of Different Motion Integration Areas in Visual Surface Reconstruction
Duration: 2016-02 - 2017-10
Researcher(s):
Miguel de Sá e Sousa de Castelo Branco, Gabriel Nascimento Ferreira da Costa, Gilberto Silva, Joăo Valente Duarte, Ricardo Martins
Institution(s): ICNAS - Institute for Nuclear Sciences Applied to Health, Coimbra, Portugal; IBILI - Institute for Biomedical Imaging and Life Sciences, Coimbra (Portugal)
Contents: Contents:
Application form
Correspondence
Progress report
Final report
Articles
Author: Castelo-Branco, M.
Secondary author(s):
Costa, G., Silva, G., Duarte, J., Martins, R.
Number of reproductions:
1
Keywords:
Motion perception / Decision-making / Perceptual Ambiguity / Decision Models / Psychophysiology

Reference code: PT/FB/BL-2014-373.11
Location: BF-GMS
Title:
High-resolution 7T fMRI data on the perceptual long-range segregation vs. integration of bistable moving stimuli
Publication year: 2017
URL:
https://www.uc.pt/en/icnas/CIP2017/CIP2017_programme/CIP2017_abstractBook
Abstract/Results: ABSTRACT:
During continuous observation of a bistable moving stimulus, visual perception may alternate between competing interpretations, switching over time between alternative percepts. In bistability resulting from e.g. plaid stimuli, the question of how the visual system integrates global patterns of motion from its components becomes particularly salient. Here, we aimed to study the role of the human motion complex (hMT+), known to be involved in motion perception and to underlie the perceptual
binding of moving surfaces, in the integration of visual motion information across brain hemispheres.
We used a previously described bistable moving stimulus with non-overlapping 1D components presented to each hemisphere thereby requiring long-range integration. Accordingly, motion coherence requires interhemispheric binding and incoherence interhemispheric segregation. We took advantage of high-resolution 7 Tesla (7T) functional Magnetic Resonance Imaging (fMRI) to explore the relation between the hMT+ spatial and temporal activity patterns and bistable perception. fMRI data from 10 healthy participants were acquired and analyzed offline. The interhemispheric correlation of the bilateral hMT+ activity and its association with the perceptual states was estimated. Additionally, we investigated hMT+ functional sub-domains responding preferentially for each type of motion percept (coherent or incoherent) and tested whether these domains have different preference for axes of motion.
We found evidence for the existence of hMT+ perceptual sub-domains, which have shown preferred axes of motion matching the motion direction of the perceptual reports. Moreover, our results suggest that hMT+ has a functional role in integrating interhemispheric representations of bistable percepts. We found a close relation between the hMT+ interhemispheric functional connectivity and the perceptual switches involving differential long-range integration of visual moving stimuli.
Accessibility: Document exists in file
Language:
eng
Author:
Sousa, T.
Secondary author(s):
Duarte, J., Costa, G., Kemper, V., Martins, R., Goebel, R., Castelo-Branco, M.
Document type:
Abstract book
Number of reproductions:
1
Reference:
Sousa, T., Duarte, J., Costa, G., Kemper, V., Martins, R., Goebel, R., & Castelo-Branco, M. (2017). High-resolution 7T fMRI data on the perceptual long-range segregation vs. integration of bistable moving stimuli. Abstract book of the 7th Iberian Congress on Perception (p. 31). Coimbra, Portugal.
Indexed document: No
Keywords: Functional magnetic resonance imaging (fMRI) / Visual motion / Bistability / Perception

High-resolution 7T fMRI data on the perceptual long-range segregation vs. integration of bistable moving stimuli

High-resolution 7T fMRI data on the perceptual long-range segregation vs. integration of bistable moving stimuli
DocumentBeta oscillations during motion integration and segmentation: evidence of binding or perceptual bias?2017

Reference code: PT/FB
Entity holding: BIAL Foundation
Location: S. Mamede do Coronado
Title:
BIAL Foundation Archive
Start date: 1994
History:
The BIAL Foundation was created in 1994 by Laboratórios BIAL in conjunction with the Council of Rectors of Portuguese Universities. BIAL’s Foundation mission is to foster the scientific study of Man from both the physical and spiritual perspectives.
Along the years the BIAL Foundation has developed an important relationship with the scientific community, first in Portugal and after worldwide. Today it is an institution of reference which aims to stimulate new researches that may help people, promote more health and contribute to new milestones to gain access to knowledge.
Among its activities the BIAL Foundation manages the BIAL Award, created in 1984, one of the most important awards in the Health field in Europe. The BIAL Award rewards both the basic and the clinical research distinguishing works of major impact in medical research.
The BIAL Foundation also assigns Scientific Research Scholarships for the study of neurophysiological and mental health in people, arousing the interest of researchers in the areas of Psychophysiology and Parapsychology.
To date the BIAL Foundation has supported 461 projects, more than 1000 researchers, with research groups in twenty-seven countries, resulting, until April 2013, in about 600 full papers, out of which 172 published in indexed international journals with an average impact factor of 3.6 and a substantial number of citations (1665).
Since 1996 the BIAL Foundation organizes the Symposia entitled "Behind and Beyond the Brain", a Forum that gathers well renowned neurosciences speakers and the BIAL Foundation Fellows which are spread around the world.
Classified as an institution of public utility, the BIAL Foundation includes among its patrons the Portuguese President, the Portuguese Universities Rectors' Council and the Portuguese Medical Association.
URL: http://www.bial.com/pt/
Accessibility: By permission

Reference code: PT/FB/BL
Entity holding: BIAL Foundation
Title: BIAL Grants
Start date: 1994
History:
In 1994 the BIAL Foundation launched a programme of science research grants with the aim of encouraging the research into Man’s physical and mental processes, namely in fields still largely unexplored but which warrant further scientific analysis, as Psychophysiology and Parapsychology.
Since its launch, applications to the BIAL grants have been increasing. Up to now 461 projects have been supported, involving more than 1000 researchers from 27 countries.
The approved applications have benefited from grants in amounts comprised between €5,000 and €50, 000. The amount to be granted is fixed by the Scientific board according to the needs of each project.
The supported projects have originated, until April 2013, in about 600 full papers, 172 out of which were published in indexed international journals with an average impact factor of 3.6 and a substantial number of citations (1665).
Among the BIAL Foundation fellows is worth highlighting the presence of scientists from prestigious universities from the United States, United Kingdom, Australia, Russia, Germany, Japan, France, Canada, and many others.
The BIAL grants are promoted biannually.

Reference code: PT/FB/BL-2014
Location: BF-GMS
Title:
2014 Grants
Start date: 2015-01

Reference code: PT/FB/BL-2014-373
Location: BF-GMS
Title:
373 - Multimodal Mapping of Visual Motion Perceptual Decision: Dissecting the Role of Different Motion Integration Areas in Visual Surface Reconstruction
Duration: 2016-02 - 2017-10
Researcher(s):
Miguel de Sá e Sousa de Castelo Branco, Gabriel Nascimento Ferreira da Costa, Gilberto Silva, Joăo Valente Duarte, Ricardo Martins
Institution(s): ICNAS - Institute for Nuclear Sciences Applied to Health, Coimbra, Portugal; IBILI - Institute for Biomedical Imaging and Life Sciences, Coimbra (Portugal)
Contents: Contents:
Application form
Correspondence
Progress report
Final report
Articles
Author: Castelo-Branco, M.
Secondary author(s):
Costa, G., Silva, G., Duarte, J., Martins, R.
Number of reproductions:
1
Keywords:
Motion perception / Decision-making / Perceptual Ambiguity / Decision Models / Psychophysiology

Reference code: PT/FB/BL-2014-373.12
Location: BF-GMS
Title:
Beta oscillations during motion integration and segmentation: evidence of binding or perceptual bias?
Publication year: 2017
URL:
https://www.uc.pt/en/icnas/CIP2017/CIP2017_programme/CIP2017_abstractBook
Abstract/Results: ABSTRACT:
In vision, perceptual features are processed in several regions distributed across the brain, owing to the specialization of visual areas. How the brain seamlessly achieves a coherent perception of visual scenes and objects through integration of these is currently unknown. We studied perception requiring visual integration/binding under ambiguous and unambiguous conditions. While observing an ambiguous moving stimulus that could be perceived in either a “bound” (one integrated surface) or an “unbound” (two objects separated, one in each hemifield) configuration (Wallach, 1935), participants reported their perception and EEG was recorded. Ambiguous stimuli challenges perception as the brain has to decide between valid but incompatible interpretations under physically constant stimulation. The distinct visual experiences were highly skewed toward a bound perception, but inevitably transitioned to a state of bistability. The bound percept correlated with differences in power, particularly at the beta frequency range (12-23 Hz), but not with synchrony in the gamma range, as initially expected. Beta oscillations have been found to play a role in perception, with conflicting reports on its role in the integration of visual information (Aissani, 2014; Zaretskaya, 2015). Changes in beta power accompanying perceptual switches allowed for a trial-by-trial classification of perceptual states under ambiguous conditions, but not for unambiguous setttings. Thus, visual experience can be identified by differences in oscillatory activity under conditions of ambiguity. When visual binding was achieved under ambiguity, resulting in a bound percept, beta oscillations were increased when visual binding was achieved, compared to the unbound perception. Nonetheless, when bound perception resulted from an unambiguous stimulus this difference was not found. This suggests that beta oscillations might not be conveying a mechanism of binding but is signalling a bias in perception, towards a more likely configuration under conflict.
Accessibility: Document exists in file
Language:
eng
Author:
Costa, G.
Secondary author(s):
Duarte, J., Martins, R., Wibral, M., Castelo-Branco, M.
Document type:
Abstract book
Number of reproductions:
1
Reference:
Costa, G., Duarte, J., Martins, R., Wibral, M., & Castelo-Branco, M. (2017). Beta oscillations during motion integration and segmentation: evidence of binding or perceptual bias? Abstract book of the 7th Iberian Congress on Perception (p. 33). Coimbra, Portugal.
Indexed document: No
Keywords: Visual binding / Perception

Beta oscillations during motion integration and segmentation: evidence of binding or perceptual bias?

Beta oscillations during motion integration and segmentation: evidence of binding or perceptual bias?
DocumentThe perceptual integration of visual motion revealed by hMT+ interhemispheric connectivity: a 7 Tesla study2017

Reference code: PT/FB
Entity holding: BIAL Foundation
Location: S. Mamede do Coronado
Title:
BIAL Foundation Archive
Start date: 1994
History:
The BIAL Foundation was created in 1994 by Laboratórios BIAL in conjunction with the Council of Rectors of Portuguese Universities. BIAL’s Foundation mission is to foster the scientific study of Man from both the physical and spiritual perspectives.
Along the years the BIAL Foundation has developed an important relationship with the scientific community, first in Portugal and after worldwide. Today it is an institution of reference which aims to stimulate new researches that may help people, promote more health and contribute to new milestones to gain access to knowledge.
Among its activities the BIAL Foundation manages the BIAL Award, created in 1984, one of the most important awards in the Health field in Europe. The BIAL Award rewards both the basic and the clinical research distinguishing works of major impact in medical research.
The BIAL Foundation also assigns Scientific Research Scholarships for the study of neurophysiological and mental health in people, arousing the interest of researchers in the areas of Psychophysiology and Parapsychology.
To date the BIAL Foundation has supported 461 projects, more than 1000 researchers, with research groups in twenty-seven countries, resulting, until April 2013, in about 600 full papers, out of which 172 published in indexed international journals with an average impact factor of 3.6 and a substantial number of citations (1665).
Since 1996 the BIAL Foundation organizes the Symposia entitled "Behind and Beyond the Brain", a Forum that gathers well renowned neurosciences speakers and the BIAL Foundation Fellows which are spread around the world.
Classified as an institution of public utility, the BIAL Foundation includes among its patrons the Portuguese President, the Portuguese Universities Rectors' Council and the Portuguese Medical Association.
URL: http://www.bial.com/pt/
Accessibility: By permission

Reference code: PT/FB/BL
Entity holding: BIAL Foundation
Title: BIAL Grants
Start date: 1994
History:
In 1994 the BIAL Foundation launched a programme of science research grants with the aim of encouraging the research into Man’s physical and mental processes, namely in fields still largely unexplored but which warrant further scientific analysis, as Psychophysiology and Parapsychology.
Since its launch, applications to the BIAL grants have been increasing. Up to now 461 projects have been supported, involving more than 1000 researchers from 27 countries.
The approved applications have benefited from grants in amounts comprised between €5,000 and €50, 000. The amount to be granted is fixed by the Scientific board according to the needs of each project.
The supported projects have originated, until April 2013, in about 600 full papers, 172 out of which were published in indexed international journals with an average impact factor of 3.6 and a substantial number of citations (1665).
Among the BIAL Foundation fellows is worth highlighting the presence of scientists from prestigious universities from the United States, United Kingdom, Australia, Russia, Germany, Japan, France, Canada, and many others.
The BIAL grants are promoted biannually.

Reference code: PT/FB/BL-2014
Location: BF-GMS
Title:
2014 Grants
Start date: 2015-01

Reference code: PT/FB/BL-2014-373
Location: BF-GMS
Title:
373 - Multimodal Mapping of Visual Motion Perceptual Decision: Dissecting the Role of Different Motion Integration Areas in Visual Surface Reconstruction
Duration: 2016-02 - 2017-10
Researcher(s):
Miguel de Sá e Sousa de Castelo Branco, Gabriel Nascimento Ferreira da Costa, Gilberto Silva, Joăo Valente Duarte, Ricardo Martins
Institution(s): ICNAS - Institute for Nuclear Sciences Applied to Health, Coimbra, Portugal; IBILI - Institute for Biomedical Imaging and Life Sciences, Coimbra (Portugal)
Contents: Contents:
Application form
Correspondence
Progress report
Final report
Articles
Author: Castelo-Branco, M.
Secondary author(s):
Costa, G., Silva, G., Duarte, J., Martins, R.
Number of reproductions:
1
Keywords:
Motion perception / Decision-making / Perceptual Ambiguity / Decision Models / Psychophysiology

Reference code: PT/FB/BL-2014-373.13
Location: BF-GMS
Title:
The perceptual integration of visual motion revealed by hMT+ interhemispheric connectivity: a 7 Tesla study
Publication year: 2017
URL:
http://www.icon2017.org/program.html
Abstract/Results: ABSTRACT:
The mechanism by which human vision segments and binds stimulus' features to produce a coherent percept is still not well-understood (Treisman, 1996; Burwick, 2014). Perceptual interpretation of ambiguous moving stimuli, for which perception alternates between competing interpretations in conditions of identical sensory input, raises the question of how the visual system integrates global patterns of motion from its components (Leopold and Logothetis, 1999; Sterzer et al., 2009). The human motion complex (hMT+) is well known to be involved in motion perception (Tootell et al., 1995; Kolster et al., 2010) and has been shown to underlie the perceptual binding of overlapping moving surfaces (Castelo-Branco et al., 2002). However, its role in interhemispheric integration of visual motion information was only explored with apparent motion paradigms (Sterzer et al., 2003; Muckli et al., 2005; Rose and Buechel, 2005; Genç et al., 2011). Here we aimed to investigate how perceptual visual motion integration vs. segregation of interhemispheric non-overlapping 1D directional cues is modulated by interhemispheric functional connectivity. A previously described ambiguous moving stimulus (Wallach, 1935; Wuerger et al., 1996), which can be perceived as a coherent pattern comprehending both visual hemi-fields or as two separate non-overlapping component surfaces (one in each visual hemi-field), was used. Data from nine healthy participants were acquired using high-resolution functional magnetic resonance imaging (fMRI) at 7T and analyzed offline to estimate the variation of hMT+ interhemispheric correlation in time. We found that hMT+ interhemispheric correlation changes in time depending on whether participants integrate all motion features into the percept of a single coherent pattern or whether they segregate visual motion features and perceive two separate surfaces. We present the first fMRI-based evidence of a close relation between interhemispheric functional connectivity in hMT+ regions and the perceptual switches involving differential long-range integration of visual moving stimuli.
Accessibility: Document does not exist in file
Language:
eng
Author:
Sousa, T.
Secondary author(s):
Duarte, J., Costa, G., Kemper, V., Martins, R. , Goebel, R., Castelo-Branco, M.
Document type:
Online abstract
Number of reproductions:
1
Reference:
Sousa, T., Duarte, J., Costa, G., Kemper, V., Martins, R., Goebel, R., & Castelo-Branco, M. (2017, August). The perceptual integration of visual motion revealed by hMT+ interhemispheric connectivity: a 7 Tesla study. Poster presented at the International Conference for Cognitive Neuroscience (ICON), Amsterdam, The Netherlands. Abstract retrieved at http://www.icon2017.org/program.html
Indexed document: No
Keywords: Perception / Visual motion / Functional magnetic resonance imaging (fMRI)
DocumentLong-range interhemispheric binding of bistable surface motion reflects bottom-up processes generated within hMT+2017

Reference code: PT/FB
Entity holding: BIAL Foundation
Location: S. Mamede do Coronado
Title:
BIAL Foundation Archive
Start date: 1994
History:
The BIAL Foundation was created in 1994 by Laboratórios BIAL in conjunction with the Council of Rectors of Portuguese Universities. BIAL’s Foundation mission is to foster the scientific study of Man from both the physical and spiritual perspectives.
Along the years the BIAL Foundation has developed an important relationship with the scientific community, first in Portugal and after worldwide. Today it is an institution of reference which aims to stimulate new researches that may help people, promote more health and contribute to new milestones to gain access to knowledge.
Among its activities the BIAL Foundation manages the BIAL Award, created in 1984, one of the most important awards in the Health field in Europe. The BIAL Award rewards both the basic and the clinical research distinguishing works of major impact in medical research.
The BIAL Foundation also assigns Scientific Research Scholarships for the study of neurophysiological and mental health in people, arousing the interest of researchers in the areas of Psychophysiology and Parapsychology.
To date the BIAL Foundation has supported 461 projects, more than 1000 researchers, with research groups in twenty-seven countries, resulting, until April 2013, in about 600 full papers, out of which 172 published in indexed international journals with an average impact factor of 3.6 and a substantial number of citations (1665).
Since 1996 the BIAL Foundation organizes the Symposia entitled "Behind and Beyond the Brain", a Forum that gathers well renowned neurosciences speakers and the BIAL Foundation Fellows which are spread around the world.
Classified as an institution of public utility, the BIAL Foundation includes among its patrons the Portuguese President, the Portuguese Universities Rectors' Council and the Portuguese Medical Association.
URL: http://www.bial.com/pt/
Accessibility: By permission

Reference code: PT/FB/BL
Entity holding: BIAL Foundation
Title: BIAL Grants
Start date: 1994
History:
In 1994 the BIAL Foundation launched a programme of science research grants with the aim of encouraging the research into Man’s physical and mental processes, namely in fields still largely unexplored but which warrant further scientific analysis, as Psychophysiology and Parapsychology.
Since its launch, applications to the BIAL grants have been increasing. Up to now 461 projects have been supported, involving more than 1000 researchers from 27 countries.
The approved applications have benefited from grants in amounts comprised between €5,000 and €50, 000. The amount to be granted is fixed by the Scientific board according to the needs of each project.
The supported projects have originated, until April 2013, in about 600 full papers, 172 out of which were published in indexed international journals with an average impact factor of 3.6 and a substantial number of citations (1665).
Among the BIAL Foundation fellows is worth highlighting the presence of scientists from prestigious universities from the United States, United Kingdom, Australia, Russia, Germany, Japan, France, Canada, and many others.
The BIAL grants are promoted biannually.

Reference code: PT/FB/BL-2014
Location: BF-GMS
Title:
2014 Grants
Start date: 2015-01

Reference code: PT/FB/BL-2014-373
Location: BF-GMS
Title:
373 - Multimodal Mapping of Visual Motion Perceptual Decision: Dissecting the Role of Different Motion Integration Areas in Visual Surface Reconstruction
Duration: 2016-02 - 2017-10
Researcher(s):
Miguel de Sá e Sousa de Castelo Branco, Gabriel Nascimento Ferreira da Costa, Gilberto Silva, Joăo Valente Duarte, Ricardo Martins
Institution(s): ICNAS - Institute for Nuclear Sciences Applied to Health, Coimbra, Portugal; IBILI - Institute for Biomedical Imaging and Life Sciences, Coimbra (Portugal)
Contents: Contents:
Application form
Correspondence
Progress report
Final report
Articles
Author: Castelo-Branco, M.
Secondary author(s):
Costa, G., Silva, G., Duarte, J., Martins, R.
Number of reproductions:
1
Keywords:
Motion perception / Decision-making / Perceptual Ambiguity / Decision Models / Psychophysiology

Reference code: PT/FB/BL-2014-373.14
Location: BF-GMS
Title:
Long-range interhemispheric binding of bistable surface motion reflects bottom-up processes generated within hMT+
Publication year: 2017
URL:
http://www.icon2017.org/program.html
Abstract/Results: ABSTRACT:
Introduction Visual stimuli are ambiguous when observers perceive them as having at least two distinct and spontaneously alternating interpretations. Perceptual interpretation poses particular challenges when motion signals coming from co-existing contours arise from single or multiple objects, as this raises the question of how the visual system integrates global patterns of motion from its components. It remains an open question whether disambiguation of ambiguous surface motion is primarily achieved in early visual cortex or higher-level brain regions. Methods In this fMRI study (n=30) we used a physically constant bistable moving stimulus with non-overlapping components restricted to individual visual hemifields that elicits perception of one coherent object or two separate objects. We studied the role of hMT+ in interhemispheric bistability and the relevance of bottom-up vs top-down modulation in perceptual integration. We also investigated directed functional connectivity (Granger causality) between activated brain areas during bistable motion states. Results We observed a relation between activity in hMT+ and perceptual switches involving interhemispheric segregation/integration of motion, crucially under non-local conditions where components do not overlap. Higher signal changes were found in response to spatially segregated component percepts than to pattern percepts. Maintenance of perceptual stability was associated with bottom-up influences generated within hMT+, as revealed by Granger causality analysis. We observed that directed influences could emerge either from left or right hMT+ during bistable motion integration/segregation. However, we also identified a role for top-down mechanisms in state transitions. Deconvolution analysis of switch-related changes revealed prefrontal, insula and cingulate areas, with a particular role for the right superior parietal lobule. Accordingly, the latter also exhibited significant directed functional connectivity with hMT+, during perceptual state maintenance. Conclusion Our results suggest that long-range interhemispheric binding of ambiguous motion representations reflects bottom-up processes within hMT+ during perceptual state maintenance. In contrast, state transitions maybe influenced by high-level regions such as the SPL.
Accessibility: Document does not exist in file
Language:
eng
Author:
Duarte, J.
Secondary author(s):
Costa, G., Martins, R., Castelo-Branco, M.
Document type:
Abstract book
Number of reproductions:
1
Reference:
Duarte, J., Costa, G., Martins, R., & Castelo-Branco, M. (2017, August). Long-range interhemispheric binding of bistable surface motion reflects bottom-up processes generated within hMT+. Poster presented at the International Conference for Cognitive Neuroscience (ICON), Amsterdam, The Netherlands. Abstract retrieved at http://www.icon2017.org/program.html
Indexed document: No
Keywords: Functional magnetic resonance imaging (fMRI) / High field MR / Perception
DocumentNeural signatures of conscious visual perception: An EEG/ERP Study 2017

Reference code: PT/FB
Entity holding: BIAL Foundation
Location: S. Mamede do Coronado
Title:
BIAL Foundation Archive
Start date: 1994
History:
The BIAL Foundation was created in 1994 by Laboratórios BIAL in conjunction with the Council of Rectors of Portuguese Universities. BIAL’s Foundation mission is to foster the scientific study of Man from both the physical and spiritual perspectives.
Along the years the BIAL Foundation has developed an important relationship with the scientific community, first in Portugal and after worldwide. Today it is an institution of reference which aims to stimulate new researches that may help people, promote more health and contribute to new milestones to gain access to knowledge.
Among its activities the BIAL Foundation manages the BIAL Award, created in 1984, one of the most important awards in the Health field in Europe. The BIAL Award rewards both the basic and the clinical research distinguishing works of major impact in medical research.
The BIAL Foundation also assigns Scientific Research Scholarships for the study of neurophysiological and mental health in people, arousing the interest of researchers in the areas of Psychophysiology and Parapsychology.
To date the BIAL Foundation has supported 461 projects, more than 1000 researchers, with research groups in twenty-seven countries, resulting, until April 2013, in about 600 full papers, out of which 172 published in indexed international journals with an average impact factor of 3.6 and a substantial number of citations (1665).
Since 1996 the BIAL Foundation organizes the Symposia entitled "Behind and Beyond the Brain", a Forum that gathers well renowned neurosciences speakers and the BIAL Foundation Fellows which are spread around the world.
Classified as an institution of public utility, the BIAL Foundation includes among its patrons the Portuguese President, the Portuguese Universities Rectors' Council and the Portuguese Medical Association.
URL: http://www.bial.com/pt/
Accessibility: By permission

Reference code: PT/FB/BL
Entity holding: BIAL Foundation
Title: BIAL Grants
Start date: 1994
History:
In 1994 the BIAL Foundation launched a programme of science research grants with the aim of encouraging the research into Man’s physical and mental processes, namely in fields still largely unexplored but which warrant further scientific analysis, as Psychophysiology and Parapsychology.
Since its launch, applications to the BIAL grants have been increasing. Up to now 461 projects have been supported, involving more than 1000 researchers from 27 countries.
The approved applications have benefited from grants in amounts comprised between €5,000 and €50, 000. The amount to be granted is fixed by the Scientific board according to the needs of each project.
The supported projects have originated, until April 2013, in about 600 full papers, 172 out of which were published in indexed international journals with an average impact factor of 3.6 and a substantial number of citations (1665).
Among the BIAL Foundation fellows is worth highlighting the presence of scientists from prestigious universities from the United States, United Kingdom, Australia, Russia, Germany, Japan, France, Canada, and many others.
The BIAL grants are promoted biannually.

Reference code: PT/FB/BL-2014
Location: BF-GMS
Title:
2014 Grants
Start date: 2015-01

Reference code: PT/FB/BL-2014-373
Location: BF-GMS
Title:
373 - Multimodal Mapping of Visual Motion Perceptual Decision: Dissecting the Role of Different Motion Integration Areas in Visual Surface Reconstruction
Duration: 2016-02 - 2017-10
Researcher(s):
Miguel de Sá e Sousa de Castelo Branco, Gabriel Nascimento Ferreira da Costa, Gilberto Silva, Joăo Valente Duarte, Ricardo Martins
Institution(s): ICNAS - Institute for Nuclear Sciences Applied to Health, Coimbra, Portugal; IBILI - Institute for Biomedical Imaging and Life Sciences, Coimbra (Portugal)
Contents: Contents:
Application form
Correspondence
Progress report
Final report
Articles
Author: Castelo-Branco, M.
Secondary author(s):
Costa, G., Silva, G., Duarte, J., Martins, R.
Number of reproductions:
1
Keywords:
Motion perception / Decision-making / Perceptual Ambiguity / Decision Models / Psychophysiology

Reference code: PT/FB/BL-2014-373.15
Location: BF-GMS
Title:
Neural signatures of conscious visual perception: An EEG/ERP Study
Publication year: 2017
URL:
http://www.icon2017.org/program.html
Abstract/Results: ABSTRACT:
Introduction: The neural mechanisms subserving visual information processing are fairly well understood, but the ones paving the way to perceptual visual awareness remain controversial. In order to shed light on this debate, we present an EEG/ERP study combining an oddball detection task at perceptual threshold of feature difference with a visual awareness paradigm based on contextual contrast detection. Keeping conditions invariant (target stimulus is sometimes detected and sometimes not), differences in measured activity should reflect specific neuroelectrical processes that correlate with distinct perceptual sates Methods: The study was conducted at IBILI/FMED of the University of Coimbra. 20 healthy volunteers, 9 males and 11 females (18-40YA, mean =30YO; SD=9), participated in the experiment. Differential thresholds for visual change detection were tested for each participant, in a psychophysical staircase task. Reference and comparison Test consisted of reddish-center/gray-surround circular patches, uniformly illuminated by experimentally rendered daylight illuminants. 47 Illuminants parametrically spaced along the daylight locus were tested. Subject adapted Targets at perceptual threshold of illuminant difference (from reference) were chosen for the Oddball EEG task. Data were segmented into epochs from -200ms to 1000ms, time-locked by stimuli category (Target/Standard), and awareness category (Detected/Non-detected), and averaged. Difference waves contrasting stimulus and awareness category were calculated for each participant. Results and conclusions. Processing differences between stimuli reaching awareness or unawareness and their evoked activity, started around 50ms after stimuli onset, with the Non-detected condition surprisingly eliciting significantly different occipital P1 sensory component, from both Standard and Detected condition, at shorter latencies. Electrophysiological differential onset for perceptual visual awareness-dependent processing started about 150ms, with significantly different posterior detection negatives and post perceptual parietal late positivities. This neural profile was not observed for the “unaware” condition. Results suggest that processing of visual features may occur in visual regions even when conditions of change do not reach awareness.
Accessibility: Document does not exist in file
Language:
eng
Author:
Teixeira, M.
Secondary author(s):
Nascimento, S., Almeida, V., Castelo-Branco, M.
Document type:
Online abstract
Number of reproductions:
1
Reference:
Teixeira, M., Nascimento, S., Almeida, V., & Castelo-Branco, M. (2017, August). Neural signatures of conscious visual perception: An EEG/ERP Study. Poster presented at the International Conference for Cognitive Neuroscience (ICON), Amsterdam, The Netherlands. Abstract retrieved at http://www.icon2017.org/program.html
Indexed document: No
Keywords: Perception / Visual motion
DocumentThe noradrenergic system and its relationship with cortical processing2017

Reference code: PT/FB
Entity holding: BIAL Foundation
Location: S. Mamede do Coronado
Title:
BIAL Foundation Archive
Start date: 1994
History:
The BIAL Foundation was created in 1994 by Laboratórios BIAL in conjunction with the Council of Rectors of Portuguese Universities. BIAL’s Foundation mission is to foster the scientific study of Man from both the physical and spiritual perspectives.
Along the years the BIAL Foundation has developed an important relationship with the scientific community, first in Portugal and after worldwide. Today it is an institution of reference which aims to stimulate new researches that may help people, promote more health and contribute to new milestones to gain access to knowledge.
Among its activities the BIAL Foundation manages the BIAL Award, created in 1984, one of the most important awards in the Health field in Europe. The BIAL Award rewards both the basic and the clinical research distinguishing works of major impact in medical research.
The BIAL Foundation also assigns Scientific Research Scholarships for the study of neurophysiological and mental health in people, arousing the interest of researchers in the areas of Psychophysiology and Parapsychology.
To date the BIAL Foundation has supported 461 projects, more than 1000 researchers, with research groups in twenty-seven countries, resulting, until April 2013, in about 600 full papers, out of which 172 published in indexed international journals with an average impact factor of 3.6 and a substantial number of citations (1665).
Since 1996 the BIAL Foundation organizes the Symposia entitled "Behind and Beyond the Brain", a Forum that gathers well renowned neurosciences speakers and the BIAL Foundation Fellows which are spread around the world.
Classified as an institution of public utility, the BIAL Foundation includes among its patrons the Portuguese President, the Portuguese Universities Rectors' Council and the Portuguese Medical Association.
URL: http://www.bial.com/pt/
Accessibility: By permission

Reference code: PT/FB/BL
Entity holding: BIAL Foundation
Title: BIAL Grants
Start date: 1994
History:
In 1994 the BIAL Foundation launched a programme of science research grants with the aim of encouraging the research into Man’s physical and mental processes, namely in fields still largely unexplored but which warrant further scientific analysis, as Psychophysiology and Parapsychology.
Since its launch, applications to the BIAL grants have been increasing. Up to now 461 projects have been supported, involving more than 1000 researchers from 27 countries.
The approved applications have benefited from grants in amounts comprised between €5,000 and €50, 000. The amount to be granted is fixed by the Scientific board according to the needs of each project.
The supported projects have originated, until April 2013, in about 600 full papers, 172 out of which were published in indexed international journals with an average impact factor of 3.6 and a substantial number of citations (1665).
Among the BIAL Foundation fellows is worth highlighting the presence of scientists from prestigious universities from the United States, United Kingdom, Australia, Russia, Germany, Japan, France, Canada, and many others.
The BIAL grants are promoted biannually.

Reference code: PT/FB/BL-2014
Location: BF-GMS
Title:
2014 Grants
Start date: 2015-01

Reference code: PT/FB/BL-2014-373
Location: BF-GMS
Title:
373 - Multimodal Mapping of Visual Motion Perceptual Decision: Dissecting the Role of Different Motion Integration Areas in Visual Surface Reconstruction
Duration: 2016-02 - 2017-10
Researcher(s):
Miguel de Sá e Sousa de Castelo Branco, Gabriel Nascimento Ferreira da Costa, Gilberto Silva, Joăo Valente Duarte, Ricardo Martins
Institution(s): ICNAS - Institute for Nuclear Sciences Applied to Health, Coimbra, Portugal; IBILI - Institute for Biomedical Imaging and Life Sciences, Coimbra (Portugal)
Contents: Contents:
Application form
Correspondence
Progress report
Final report
Articles
Author: Castelo-Branco, M.
Secondary author(s):
Costa, G., Silva, G., Duarte, J., Martins, R.
Number of reproductions:
1
Keywords:
Motion perception / Decision-making / Perceptual Ambiguity / Decision Models / Psychophysiology

Reference code: PT/FB/BL-2014-373.16
Location: BF-GMS
Title:
The noradrenergic system and its relationship with cortical processing
Publication year: 2017
URL:
http://www.icon2017.org/program.html
Abstract/Results: ABSTRACT:
Noradrenaline is a neuromodulator that acts by changing how the neurons respond to incoming input. It is produced in the locus coeruleus, a small brainstem nucleus, and is released throughout the brain1. Yet, it is not clear if the impact of noradrenaline release on the different brain areas is relatively constant, for example enhancing cortical excitability2, and functional connectivity3, or if its impact is modulated by the demands of the task at hand. In this study, we addressed this question by probing noradrenergic function using pupil diameter as a proxy for noradrenergic activity levels, in a group of young adults (n=32; age=23±3 years). Simultaneously, we acquired the electroencephalogram (EEG) to investigate how noradrenergic activity relates to cortical processes. We used two warned auditory tasks, a simple reaction time (RT) task requiring fast responses, and a go/no-go task requiring inhibitory control. In both tasks, a warning stimulus preceded the imperative stimuli. Baseline pupil dilation did not show a significant effect of task, yet phasic pupil dilation responses elicited by the warning stimulus were higher during the go/no-go task than the simple RT task. Notably, response speed was related to the amplitude of the pupil dilation in the simple reaction time task but not in the go/no-go task, suggesting a facilitation of motor processing in one task but not in the other. Accordingly, the contingent negative variation (CNV), a slow negative event-related potential, elicited by the warning stimulus, and related to the readiness to respond, correlated with pupil dilation only during the simple RT task. In summary, our results suggest that the relationship between pupil dilation responses, behaviour, and cortical function are task dependent. These observations indicate that the effect of noradrenaline in the brain is modulated by context, and highlight the complexity underlying the effect of neuromodulation on brain function.
Accessibility: Document does not exist in file
Language:
eng
Author:
Ribeiro, M.
Secondary author(s):
Castelo-Branco, M.
Document type:
Online abstract
Number of reproductions:
1
Reference:
Ribeiro, M., & Castelo-Branco, M. (2017, August). The noradrenergic system and its relationship with cortical processing. Poster presented at the International Conference for Cognitive Neuroscience (ICON), Amsterdam, The Netherlands. Abstract retrieved at http://www.icon2017.org/program.html
Indexed document: No
Keywords: Noradrenaline
DocumentBeta oscillations reflect perceptual experience under ambiguous stimulation but not in the absence of conflict 2017

Reference code: PT/FB
Entity holding: BIAL Foundation
Location: S. Mamede do Coronado
Title:
BIAL Foundation Archive
Start date: 1994
History:
The BIAL Foundation was created in 1994 by Laboratórios BIAL in conjunction with the Council of Rectors of Portuguese Universities. BIAL’s Foundation mission is to foster the scientific study of Man from both the physical and spiritual perspectives.
Along the years the BIAL Foundation has developed an important relationship with the scientific community, first in Portugal and after worldwide. Today it is an institution of reference which aims to stimulate new researches that may help people, promote more health and contribute to new milestones to gain access to knowledge.
Among its activities the BIAL Foundation manages the BIAL Award, created in 1984, one of the most important awards in the Health field in Europe. The BIAL Award rewards both the basic and the clinical research distinguishing works of major impact in medical research.
The BIAL Foundation also assigns Scientific Research Scholarships for the study of neurophysiological and mental health in people, arousing the interest of researchers in the areas of Psychophysiology and Parapsychology.
To date the BIAL Foundation has supported 461 projects, more than 1000 researchers, with research groups in twenty-seven countries, resulting, until April 2013, in about 600 full papers, out of which 172 published in indexed international journals with an average impact factor of 3.6 and a substantial number of citations (1665).
Since 1996 the BIAL Foundation organizes the Symposia entitled "Behind and Beyond the Brain", a Forum that gathers well renowned neurosciences speakers and the BIAL Foundation Fellows which are spread around the world.
Classified as an institution of public utility, the BIAL Foundation includes among its patrons the Portuguese President, the Portuguese Universities Rectors' Council and the Portuguese Medical Association.
URL: http://www.bial.com/pt/
Accessibility: By permission

Reference code: PT/FB/BL
Entity holding: BIAL Foundation
Title: BIAL Grants
Start date: 1994
History:
In 1994 the BIAL Foundation launched a programme of science research grants with the aim of encouraging the research into Man’s physical and mental processes, namely in fields still largely unexplored but which warrant further scientific analysis, as Psychophysiology and Parapsychology.
Since its launch, applications to the BIAL grants have been increasing. Up to now 461 projects have been supported, involving more than 1000 researchers from 27 countries.
The approved applications have benefited from grants in amounts comprised between €5,000 and €50, 000. The amount to be granted is fixed by the Scientific board according to the needs of each project.
The supported projects have originated, until April 2013, in about 600 full papers, 172 out of which were published in indexed international journals with an average impact factor of 3.6 and a substantial number of citations (1665).
Among the BIAL Foundation fellows is worth highlighting the presence of scientists from prestigious universities from the United States, United Kingdom, Australia, Russia, Germany, Japan, France, Canada, and many others.
The BIAL grants are promoted biannually.

Reference code: PT/FB/BL-2014
Location: BF-GMS
Title:
2014 Grants
Start date: 2015-01

Reference code: PT/FB/BL-2014-373
Location: BF-GMS
Title:
373 - Multimodal Mapping of Visual Motion Perceptual Decision: Dissecting the Role of Different Motion Integration Areas in Visual Surface Reconstruction
Duration: 2016-02 - 2017-10
Researcher(s):
Miguel de Sá e Sousa de Castelo Branco, Gabriel Nascimento Ferreira da Costa, Gilberto Silva, Joăo Valente Duarte, Ricardo Martins
Institution(s): ICNAS - Institute for Nuclear Sciences Applied to Health, Coimbra, Portugal; IBILI - Institute for Biomedical Imaging and Life Sciences, Coimbra (Portugal)
Contents: Contents:
Application form
Correspondence
Progress report
Final report
Articles
Author: Castelo-Branco, M.
Secondary author(s):
Costa, G., Silva, G., Duarte, J., Martins, R.
Number of reproductions:
1
Keywords:
Motion perception / Decision-making / Perceptual Ambiguity / Decision Models / Psychophysiology

Reference code: PT/FB/BL-2014-373.17
Location: BF-GMS
Title:
Beta oscillations reflect perceptual experience under ambiguous stimulation but not in the absence of conflict
Publication year: 2017
URL:
http://www.icon2017.org/program.html
Abstract/Results: ABSTRACT:
Introduction: Bistable stimuli allows for the study of cognition and neuronal mechanisms of perceptual decision under physically constant stimulation. In vision, several studies on bistable imagery have found beta oscillations to play a role in perception, be it in the integration of visual information (Aissani, 2014) or in the emergence of illusions (VanRullen, 2006). We studied perception requiring visual integration/binding under ambiguous and unambiguous conditions and correlated brain oscillatory activity with distinct perceptual states. Methods: In the present EEG study (58 channels), participants (n = 23) observed an ambiguous moving stimulus that could be perceived in either a "bound" (one integrated surface) or an "unbound" (two objects separated, one in each hemifield) configuration (Wallach, 1935). Participants reported continuously their perception. The same task was performed when viewing an unambiguous version of the same stimulus. Results: The distinct visual experiences, bound and unbound percepts of the ambiguous stimulus, correlated with differences in power, particularly at the beta frequency range (12-23 Hz). The increase in beta activity was present over several electrodes but most pronounced over parietal electrodes. Moreover, changes in beta power related to perceptual switches allowed for a trial-by-trial classification of the subjects' perceptual state under ambiguous conditions. Nonetheless, this difference in oscillatory activity was not observed in the unambiguous condition. Conclusions: Our findings reveal that visual experience can be identified by differences in oscillatory activity in conditions of ambiguity. In our current paradigm, when visual binding was achieved under ambiguity, resulting in a bound percept, beta oscillations were increased compared to the unbound perception. Nonetheless, when bound perception resulted from an unambiguous stimulus, but physically and perceptually similar, this difference was not found. This suggests that beta oscillations are associated with perception under conflict and play a role in perceptual decision making.
Accessibility: Document does not exist in file
Language:
eng
Author:
Costa, G.
Secondary author(s):
Duarte, J., Martins, R., Castelo-Branco, M.
Document type:
Online abstract
Number of reproductions:
1
Reference:
Costa, G., Duarte, J., Martins, R., Castelo-Branco, M. (2017, August). Beta oscillations reflect perceptual experience under ambiguous stimulation but not in the absence of conflict. Poster presented at the International Conference for Cognitive Neuroscience (ICON), Amsterdam, The Netherlands. Abstract retrieved at http://www.icon2017.org/program.html
Indexed document: No
Keywords: Visual binding / Perception / Bistability