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DocumentUsing whole-brain computational modelling for identifying hubs necessary for transitioning between sleep stages measured with MEG 2014

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-2012
Location: SEC PCA
Title:
2012 Grants
Start date: 2013-02

Reference code: PT/FB/BL-2012-220
Location: Arquivo PCA - Pasta 15/2012
Title:
220 - Consciousness disconnects during sleep
Duration: 2013-04 - 2016-05
Researcher(s):
Giovanni Piantoni
Institution(s): Cortical Physiology Lab, Massachusets General Hospital, Harvard Medical School (USA) and Netherlands Institute for Neuroscience, Amsterdam (The Netherlands)
Contents: Contents:
Bursary agreement
Application form
Correspondence
Progress reports
Final reports
1 article
Submitted papers
Language: eng
Author:
Piantoni, G.
Number of reproductions:
1
Keywords:
Psychophysiology / Brain structure and function / Sleep and dreams

Reference code: PT/FB/BL-2012-220.02
Location: Arquivo PCA - Pasta 15/2012
Title:
Using whole-brain computational modelling for identifying hubs necessary for transitioning between sleep stages measured with MEG
Publication year: 2014
URL:
http://www.abstractsonline.com/Plan/ViewAbstract.aspx?sKey=4da09ec6-f098-4bf1-9af3-8457926fe748&cKey=56e8f950-5ebd-4db6-819e-f6589b25cdf9&mKey=54c85d94-6d69-4b09-afaa-502c0e680ca7
Abstract/Results: ABSTRACT:
Sleep in normal adults is characterised by highly consistent state-transitions in the brain over time. Compared to the descent to sleep, which is, at least partly, a voluntary act, the switching between sleep stages appears almost mechanistic. The temporal order and relationship between the brain states of various sleep stages are remarkably constant. Describing the whole-brain activity of individual sleep stages was one of the first merits of electroencephalography (EEG), and more advanced forms of neuroimaging have expanded our understanding of the spatiotemporal unfolding of sleep. Yet, the mechanisms underlying, and brain regions orchestrating the transitions between wakefulness and the various sleep states remain unresolved. Understanding this may lead to important insights into not only the fundamental principles of the human brain function but also the causes of sleep disorders. Viewing the brain as an intricately connected network, in which activity occurs as a result of communication between parts of this network has helped the investigation of spontaneous brain activity. By combining analysis of structural imaging data, such as diffusion tensor imaging (DTI), and functional imaging data, such as functional Magnetic Resonance Imaging and magnetoencephalography (MEG), computational modelling has successfully been applied to describe how spontaneous dynamics can arise from the structural properties of the network. Modelling of whole-brain activity can assist in elucidating the causal links facilitating the transitions between brain states of sleep. In computational terms the aim is to understand the interplay between integration and segregation in the brain and to find the important binding regions that are necessary and sufficient for network transitions between states. In the current study we used MEG to measure whole-brain activity of 11 healthy adults that went through the different phases of sleep. We obtained the spatiotemporal dynamics of brain activity by extracting the slow fluctuating changes in the Hilbert power envelope of frequency filtered and beamformed time-series. A Hidden Markov Model (HMM) makes it possible to resolve non-stationarity of functional networks. Thus each sleep stage was tested as individual transient states of the network. Finally, we applied a whole-brain computational model that allowed us to identify the necessary and sufficient brain regions binding information across the brain and facilitating the transitions between brain states during sleep.
Accessibility: Document does exist in file
Language:
eng
Author:
Stevner, A.
Secondary author(s):
Piantoni, G., Colclough, G., Woolrich, M., Parsons, C., Cabral, J., Van Someren, E., van der Werf, Y., Deco, G., Kringelbach, M.
Document type:
Online abstract
Number of reproductions:
1
Reference:
Stevner, A., Piantoni, G., Colclough, G., Woolrich, M., Parsons, C., Cabral, J., Van Someren, E., van der Werf, Y., Deco, G., & Kringelbach, M. (2014, November). Using whole-brain computational modelling for identifying hubs necessary for transitioning between sleep stages measured with MEG. Poster presented at the 2014 Society for Neuroscience meeting, Washington, D. C. Abstract retrieved from http://www.abstractsonline.com/Plan/ViewAbstract.aspx?sKey=4da09ec6-f098-4bf1-9af3-8457926fe748&cKey=56e8f950-5ebd-4db6-819e-f6589b25cdf9&mKey=54c85d94-6d69-4b09-afaa-502c0e680ca7
Indexed document: No
Keywords: Sleep / Network / MEG

DocumentBody position alters human resting-state: Insights from multi-postural magnetoencephalography2016

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-2014-118
Location: BF-GMS
Title:
118 - Recursive consciousness training: Using neurofeedback to induce altered states
Duration: 2015-09 - 2017-11
Researcher(s):
Amir Raz, Niels Birbaumer, Robert T Thibault
Institution(s): Montreal Neurological Institute, McGill University (Canada); Institute of Medical Psychology and Behavioral Neurobiology, University of Tübingen (Germany)
Contents: Contents:
Application form
Correspondence
Progress report
Final report
Language: eng
Author:
Raz, A.
Secondary author(s):
Birmaumer, N., Thibault, R. T.
Number of reproductions:
3
Keywords:
Brain Self-Regulation / Altered States of Consciousness / Neurofeedback / Meditation / Psychophysiology and Parapsychology

Reference code: PT/FB/BL-2014-118.03
Location: BF-GMS
Title:
Body position alters human resting-state: Insights from multi-postural magnetoencephalography
Publication year: 2016
URL:
http://link.springer.com/article/10.1007/s11682-015-9447-8
Abstract/Results: ABSTRACT:
Neuroimaging researchers tacitly assume that body-position scantily affects neural activity. However, whereas participants in most psychological experiments sit upright, many modern neuroimaging techniques (e.g., fMRI) require participants to lie supine. Sparse findings from electroencephalography and positron emission tomography suggest that body position influences cognitive processes and neural activity. Here we leverage multi-postural magnetoencephalography (MEG) to further unravel how physical stance alters baseline brain activity. We present resting-state MEG data from 12 healthy participants in three orthostatic conditions (i.e., lying supine, reclined at 45°, and sitting upright). Our findings demonstrate that upright, compared to reclined or supine, posture increases left-hemisphere high-frequency oscillatory activity over common speech areas. This proof-of-concept experiment establishes the feasibility of using MEG to examine the influence of posture on brain dynamics. We highlight the advantages and methodological challenges inherent to this approach and lay the foundation for future studies to further investigate this important, albeit little-acknowledged, procedural caveat.
Accessibility: Document exists in file
Copyright/Reproduction:
By permission
Language:
eng
Author:
Thibault, R. T.
Secondary author(s):
Lifshitz, M., Raz, A.
Document type:
Article
Number of reproductions:
3
Percentiles:
6
Reference:
Thibault, R.T., Lifshitz, M., & Raz, A. (2016). Body position alters human resting-state: Insights from multi-postural magnetoencephalography. Brain Imaging and Behavior, 10(3), 772-780. https://doi.org/10.1007/s11682-015-9447-8
2-year Impact Factor: 3.985|2016
Times cited: 22|2024-02-07
Indexed document: Yes
Quartile: Q2
Keywords: MEG / Neuroimaging / Posture / Supine position / Upright position

DocumentSource localization of brain states associated with canonical neuroimaging postures2017

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-2014-118
Location: BF-GMS
Title:
118 - Recursive consciousness training: Using neurofeedback to induce altered states
Duration: 2015-09 - 2017-11
Researcher(s):
Amir Raz, Niels Birbaumer, Robert T Thibault
Institution(s): Montreal Neurological Institute, McGill University (Canada); Institute of Medical Psychology and Behavioral Neurobiology, University of Tübingen (Germany)
Contents: Contents:
Application form
Correspondence
Progress report
Final report
Language: eng
Author:
Raz, A.
Secondary author(s):
Birmaumer, N., Thibault, R. T.
Number of reproductions:
3
Keywords:
Brain Self-Regulation / Altered States of Consciousness / Neurofeedback / Meditation / Psychophysiology and Parapsychology

Reference code: PT/FB/BL-2014-118.04
Location: BF-GMS
Title:
Source localization of brain states associated with canonical neuroimaging postures
Publication year: 2017
URL:
https://direct.mit.edu/jocn/article/29/7/1292/28668/Source-Localization-of-Brain-States-Associated
Abstract/Results: ABSTRACT:
Cognitive neuroscientists rarely consider the influence that body position exerts on brain activity; yet, postural variation holds important implications for the acquisition and interpretation of neuroimaging data. Whereas participants in most behavioral and EEG experiments sit upright, many prominent brain imaging techniques (e.g., fMRI) require participants to lie supine. Here we demonstrate that physical comportment profoundly alters baseline brain activity as measured by magnetoencephalography (MEG)-an imaging modality that permits multipostural acquisition. We collected resting-state MEG data from 12 healthy participants in three postures (lying supine, reclining at 45°, and sitting upright). Source-modeling analysis revealed a broadly distributed influence of posture on resting brain function. Sitting upright versus lying supine was associated with greater high-frequency (i.e., beta and gamma) activity in widespread parieto-occipital cortex. Moreover, sitting upright and reclining postures correlated with dampened activity in prefrontal regions across a range of bandwidths (i.e., from alpha to low gamma). The observed effects were large, with a mean Cohen's d of 0.95 ( SD = 0.23). In addition to neural activity, physiological parameters such as muscle tension and eye blinks may have contributed to these posture-dependent changes in brain signal. Regardless of the underlying mechanisms, however, the present results have important implications for the acquisition and interpretation of multimodal imaging data (e.g., studies combining fMRI or PET with EEG or MEG). More broadly, our findings indicate that generalizing results-from supine neuroimaging measurements to erect positions typical of ecological human behavior-would call for considering the influence that posture wields on brain dynamics.
Accessibility: Document exists in file
Language:
eng
Author:
Lifshitz, M.
Secondary author(s):
Thibault, R. T., Roth, R., Raz, A.
Document type:
Article
Number of reproductions:
3
Percentiles:
7
Reference:
Lifshitz, M., Thibault, R. T., Roth, R., & Raz, A. (2017). Source localization of brain states associated with canonical neuroimaging postures. Journal of Cognitive Neuroscience, 29(7),1292-1301. https://doi.org/10.1162/jocn_a_01107
2-year Impact Factor: 3.468|2017
Times cited: 5|2024-02-08
Indexed document: Yes
Quartile: Q2
Keywords: MEG / Neuroimaging / Posture / Supine position / Upright position

Source-localization of brain states associated with canonical neuroimaging postures

Source-localization of brain states associated with canonical neuroimaging postures

DocumentSelf-specific processing in the meditating brain: a MEG neurophenomenology study2016

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-2010
Location: Arquivo PCA - Pastas 1 a 23
Title:
2010 Grants
Start date: 2011-01

Reference code: PT/FB/BL-2010-027
Location: Arquivo PCA - Pasta 1/2010
Title:
027 - From trance to transcendence during meditation
Duration: 2011-06 - 2013-06
Researcher(s):
Joseph Glicksohn, Abraham Goldstein, Aviva Berkovich Ohana
Institution(s): The Leslie and Susan Golda (Goldschmied) Multidisciplinary Brain Research Center, Bar-Ilan University, Ramat Gan (Israel)
Contents: Contents:
Bursary agreement
Application form
Correspondence
Financial report and expenditure documents
Progress report
Final report
Book chapter
Language: eng
Author:
Glicksohn, J.
Secondary author(s):
Goldstein, A., Berkovich-Ohana, A.
Number of reproductions:
3
Keywords:
Parapsychology and Psychophysiology / Altered states of consciousness / Meditation / Trance / Brain structure and function / Cognitive processes / Perception / Consciousness / Assessment tools

Reference code: PT/FB/BL-2010-027.16
Location: Arquivo PCA - Pasta 1/2010
Title:
Self-specific processing in the meditating brain: a MEG neurophenomenology study
Publication year: 2016
Abstract/Results:
ABSTRACT:
Self-specific processes (SSPs) specify the self as an embodied subject and agent, implementing a functional self/nonself distinction in perception, cognition, and action. Despite recent interest, it is still undetermined whether SSPs are all-or-nothing or graded phenomena; whether they can be identified in neuroimaging data; and whether they can be altered through attentional training. These issues are approached through a neurophenomenological exploration of the sense-of-boundaries (SB), the fundamental experience of being an 'I' (self) separated from the 'world' (nonself). The SB experience was explored in collaboration with a uniquely qualified meditation practitioner, who volitionally produced, while being scanned by magnetoencephalogram (MEG), three mental states characterized by a graded SB experience. The results were then partly validated in an independent group of 10 long-term meditators. Implicated neural mechanisms include right-lateralized beta oscillations in the temporo-parietal junction, a region known to mediate the experiential unity of self and body; and in the medial parietal cortex, a central node of the self's representational system. The graded nature as well as the trainable flexibility and neural plasticity of SSPs may hold clinical implications for populations with a disturbed SB.
Accessibility: Document exists in file
Language:
eng
Author:
Dor-Ziderman, Y.
Secondary author(s):
Ataria, Y., Fulder, S., Goldstein, A., Berkovich-Ohana, A
Document type:
Article
Number of reproductions:
3
Reference:
Dor-Ziderman, Y., Ataria, Y., Fulder, S., Goldstein, A., & Berkovich-Ohana, A. (2016). Self-specific processing in the meditating brain: a MEG neurophenomenology study. Neuroscience of Consciousness, 2016(1), niw019. https://doi.org/10.1093/nc/niw019
2-year Impact Factor: N/A
Impact factor notes: Impact factor only available since 2022
Times cited: 31|2024-02-07
Indexed document: Yes
Quartile: N/A
Keywords: Self-specific processes / Minimal self / MEG / Neurophenomenology / Meditation / Beta band / Parietal cortex

Self-specific processing in the meditating brain: a MEG neurophenomenology study

Self-specific processing in the meditating brain: a MEG neurophenomenology study

DocumentLooking through the windows: a study about the dependency of phase-coupling estimates on the data length2022

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-2020
Location: BF-GMS
Title:
2020 Grants
Start date: 2021-01

Reference code: PT/FB/BL-2020-080
Location: BF-GMS
Title:
080 - Mindfulness meditation state and trait through the eyes of brain computational modelling
Researcher(s): Laura Marzetti
Institution(s): Department of Neurosciences, Imaging and Clinical Sciences, Universitŕ degli Studi "G. d'Annunzio" Chieti - Pescara (Italy)
Abstract/Results: Contents:
Application form
Correspondence
Language: eng
Notes:
This project hasn't started yet
Author: Marzetti, L.
Number of reproductions:
3
Keywords:
Meditation / Brain states / Computational modelling / Neuroimaging / Psychophysiology and Parapsychology

Reference code: PT/FB/BL-2020-080.02
Location: BF-GMS
Title:
Looking through the windows: a study about the dependency of phase-coupling estimates on the data length
Publication year: 2022
URL:
https://iopscience.iop.org/article/10.1088/1741-2552/ac542f
Abstract/Results: Objective. Being able to characterize functional connectivity (FC) state dynamics in a real-time setting, such as in brain–computer interface, neurofeedback or closed-loop neurostimulation frameworks, requires the rapid detection of the statistical dependencies that quantify FC in short windows of data. The aim of this study is to characterize, through extensive realistic simulations, the reliability of FC estimation as a function of the data length. In particular, we focused on FC as measured by phase-coupling (PC) of neuronal oscillations, one of the most functionally relevant neural coupling modes. Approach. We generated synthetic data corresponding to different scenarios by varying the data length, the signal-to-noise ratio (SNR), the phase difference value, the spectral analysis approach (Hilbert or Fourier) and the fractional bandwidth. We compared seven PC metrics, i.e. imaginary part of phase locking value (iPLV), PLV of orthogonalized signals, phase lag index (PLI), debiased weighted PLI, imaginary part of coherency, coherence of orthogonalized signals and lagged coherence. Main results. Our findings show that, for a SNR of at least 10 dB, a data window that contains 5–8 cycles of the oscillation of interest (e.g. a 500–800 ms window at 10 Hz) is generally required to achieve reliable PC estimates. In general, Hilbert-based approaches were associated with higher performance than Fourier-based approaches. Furthermore, the results suggest that, when the analysis is performed in a narrow frequency range, a larger window is required. Significance. The achieved results pave the way to the introduction of best-practice guidelines to be followed when a real-time frequency-specific PC assessment is at target.
Accessibility: Document exists in file
Language:
eng
Author:
Basti, A.
Secondary author(s):
Chella, F., Guidotti, R. , Ermolova, M., D'Andrea, A., Stenroos, M., Romani, G. L., Pizzela, V., Marzetti, L.
Document type:
Article
Number of reproductions:
3
Percentiles:
6
Reference:
Basti, A., Chella, F., Guidotti, R., Ermolova, M., D’Andrea, A., Stenroos, M., … Marzetti, L. (2022). Looking through the windows: A study about the dependency of phase-coupling estimates on the data length. Journal of Neural Engineering, 19(1). https://doi.org/10.1088/1741-2552/ac542f
2-year Impact Factor: 4.000|2022
Times cited: 4|2024-02-15
Indexed document: Yes
Quartile: Q2
Keywords: Functional connectivity / Phase-coupling / Dynamic connectivity / EEG / MEG

Looking through the windows: a study about the dependency of phase-coupling estimates on the data length

Looking through the windows: a study about the dependency of phase-coupling estimates on the data length

DocumentAlpha rhythm modulations in the intraparietal sulcus reflect decision signals during item recognition2022

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-2016
Location: BF-GMS
Title:
2016 Grants
Start date: 2017-01

Reference code: PT/FB/BL-2016-159
Location: BF-GMS
Title:
159 - Unraveling the neural mechanisms of human memory decisions with magnetoencephalography
Duration: 2017-05 - 2022-11
Researcher(s):
Carlo Sestieri, Stefania Della Penna
Institution(s): Department of Neurosciences, Imaging and Clinical Sciences, University "G. D'Annunzio" of Chieti - Pescara (Italy
Contents: Contents:
Application form
Correspondence
Research Funding Agreement
Progress report
Final report
Articles
Author: Sestieri, C.
Secondary author(s):
Della Penna, S.
Number of reproductions:
1
Keywords:
Magnetoencephalography / Episodic memory / Decision evidence / Cortical dynamics / Psychophysiology

Reference code: PT/FB/BL-2016-159.03
Location: BF-GMS
Title:
Alpha rhythm modulations in the intraparietal sulcus reflect decision signals during item recognition
Publication year: 2022
URL:
https://www.sciencedirect.com/science/article/pii/S1053811922004645
Abstract/Results: Theoretical work and empirical observations suggest a contribution of regions along the intraparietal sulcus to the process of evidence accumulation during episodic memory retrieval. In the present study, we recorded magnetoencephalographic signals in a group of healthy human participants to test whether the pattern of oscillatory modulations in the lateral parietal lobe is consistent with the mnemonic accumulator hypothesis. To this aim, the dynamic properties and the spatial distribution of MEG oscillatory power modulations were investigated during an item recognition task in which the amount of evidence for old vs. new memory decisions was manipulated across three levels. A data-driven approach was employed to identify brain nodes where oscillatory activity was sensitive to both retrieval success and the amount of evidence for old decisions. The analysis identified three nodes in the left lateral parietal lobe where the event-related desynchronization (ERD) in the alpha frequency band showed both effects. Further analyses revealed that the alpha ERD in the intraparietal sulcus, but not in other parietal nodes: i. showed modulation of duration in response to the amount of evidence for both old and new decisions, ii. was behaviorally significant, and iii. more accurately tracked the subjective memory judgment rather than the objective memory status. The present findings provide support for a recent anatomical-functional model of the parietal involvement in episodic memory retrieval and suggest that the alpha ERD in the intraparietal sulcus might represent a neural signature of the evidence accumulation process during simple memory-based decisions.
Accessibility: Docuement exists in file
Copyright/Reproduction:
by permission
Language:
eng
Author:
Spadone, S.
Secondary author(s):
Tosoni, A., Penna, S., Sestieri, C.
Document type:
Article
Number of reproductions:
1
Percentiles:
6
Reference:
Spadone, S., Tosoni, A., Penna, S. & Sestieri, C. (2022). Alpha rhythm modulations in the intraparietal sulcus reflect decision signals during item recognition. NeuroImage, 258, 119375. https://doi.org/10.1016/j.neuroimage.2022.119345
2-year Impact Factor: 5.700|2022
Times cited: 2|2024-02-03
Indexed document: Yes
Quartile: Q1
Keywords: Episodic memory / Decision-making / MEG / Alpha rhythm / Parietal lobe

Alpha rhythm modulations in the intraparietal sulcus reflect decision signals during item recognition

Alpha rhythm modulations in the intraparietal sulcus reflect decision signals during item recognition