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BIAL Foundation
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DocumentFinal report - Neural mechanisms underlying unconscious working memory2021

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-2018
Location: BF-GMS
Title:
2018 Grants
Start date: 2019-01

Reference code: PT/FB/BL-2018-356
Location: BF-GMS
Title:
356 - Neural mechanisms underlying unconscious working memory
Duration: 2019-05 - 2021-09
Researcher(s):
Albert Compte, João Barbosa, Josep Valls-Sole
Institution(s): Institut d'investigacions Biomèdiques August Pi i Sunyer - IDIBAPS, Barcelona (Spain)
Contents: Contents:
Application form
Correspondence
Research Funding Agreement
Progress report
Final report
Articles
Language: eng
Author:
Compte, A.
Secondary author(s):
Barbosa, J., Valls-Sole, J.
Number of reproductions:
1
Keywords:
Working memory / Consciousness / Transcranial magnetic stimulation (TMS) / Psychophysiology

Reference code: PT/FB/BL-2018-356.01
Location: BF-GMS
Title:
Final report - Neural mechanisms underlying unconscious working memory
Publication year: 2021
URL:
https://www.bial.com/media/3777/neural-mechanisms-underlying-unconscious-working-memory.pdf
Abstract/Results: ABSTRACT:
Working memory is not always accurate in its representations and can be biased by previously encountered stimuli, the so-called serial dependence. This effect has been viewed in consciously perceived memories, but it is unclear whether it also affects subliminally presented cues, which subjects rate as unseen but still report in the correct location above chance. Here, the serial dependence in subliminal working memory is examined experimentally and possible neural mechanisms are explored in silico. Specifically, we tested if the same activity-silent mechanism can account for both subliminal working memory and serial dependence. We performed behavioral experiments which elicited subliminal and supraliminal representations in participants by masking a briefly presented stimulus and by analyzing serial dependence between consecutive trials. In computational models, we tested two types of synaptic mechanisms, synaptic facilitation and short-term potentiation, in bump attractor networks, a well-established framework for modeling working memory on a neural level. The network model predictions were compared to the behavioral results in humans to evaluate the feasibility of explaining both serial dependence and subliminal working memory on the basis of shared activity-silent mechanisms. We found that activity-silent mechanisms can indeed account for single trial behavior of human subjects in both supraliminal and subliminal trials. However, network models could not account for serial dependence observed experimentally in subliminal trials. We conclude that serial dependence and subliminal working memory are unlikely to stem from common activity-silent mechanisms.
Accessibility: Document exists in file
Language:
eng
Author:
Compte, A.
Secondary author(s):
Barbosa, J., Valls-Sole, J.
Document type:
Final report
Number of reproductions:
1
Reference:
Compte, A., Barbosa, J., & Valls-Sole, J. (2021). Final report - Neural mechanisms underlying unconscious working memory.
Indexed document: No
Keywords: Working memory / Subliminal perception / Serial dependence / Activity-silent mechanism / Bump-attractor model / Pupil size

Final report - Neural mechanisms underlying unconscious working memory

Final report - Neural mechanisms underlying unconscious working memory
DocumentEvent-related transcutaneous vagus nerve stimulation modulates behaviour and pupillary responses during an auditory oddball task2022

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-2016-088
Location: BF-GMS
Title:
088 - The interoceptive self: Transcutaneous vagus nerve stimulation as a new tool to investigate heart-brain interactions
Duration: 2017-10 - 2019-10
Researcher(s):
Ruben Azevedo, Emmanouil Tsakiris, Valerio Vallani
Institution(s): Department of Psychology, Royal Holloway, University of London (UK)
Contents: Contents:
Application form
Correspondence
Research Funding Agreement
Progress report
Final report
Articles
Author: Azevedo, R.
Secondary author(s):
Tsakiris, M.
Number of reproductions:
1
Keywords:
Interoceptive accuracy / Heart / Vagus nerve / Cardiac cycle / Psychophysiology

Reference code: PT/FB/BL-2016-088.04
Location: BF-GMS
Title:
Event-related transcutaneous vagus nerve stimulation modulates behaviour and pupillary responses during an auditory oddball task
Publication year: 2022
URL:
https://www.sciencedirect.com/science/article/pii/S0306453022000609?via%3Dihub
Abstract/Results: Transcutaneous auricular vagus nerve stimulation (taVNS) is a neuromodulatory technique that is thought to activate the Locus Coeruleus-Noradrenaline (LC-NA) system. Standard taVNS protocols consist of the administration of intermittent or continuous stimulation over long periods. However, there is currently a limited understanding of the temporal dynamics of taVNS modulation of cognitive processes, as well as its mechanisms of action. We argue that novel stimulation approaches, informed by established theories of the LC-NA system, are needed to further our understanding of the neurocognitive underpinnings of taVNS. In this pre-registered study, we tested whether an “event-related” taVNS protocol can modulate the LC-NA system. In a within-subject design (single session) we delivered brief trains of taVNS (3 s) during an auditory oddball paradigm. The taVNS was time-locked to the target stimuli presentation and randomly interleaved with sham stimulation. Response times (RT) and stimuli-driven pupillary diameter (PD) were used as indices of LC-NA activity. Results revealed that active taVNS increased RT to targets, as compared to sham trials. Notably, in line with current theories of LC-NA functioning, taVNS modulation of target-related pupil dilation depended on pre-stimulation PD, an index of baseline LC-NA activity. In particular, active (vs. sham) taVNS was associated with smaller pupil dilation in trials where the baseline PD was small. These results demonstrate, for the first time, the effectiveness of brief event-related taVNS in the modulation of cognitive processes and highlight the importance of using pupil size as an index of tonic and phasic LC-NA activity.
Accessibility: Document exists in file
Copyright/Reproduction:
by permission
Language:
eng
Author:
Villani, V.
Secondary author(s):
Finotti, G., Di Lernia, D., Tsakiris, M., Azevedo, R. T.
Document type:
Article
Number of reproductions:
1
Reference:
Villani, V., Finotti, G., Di Lernia, D., Tsakiris, M. & Azevedo, R. T. (2022). Event-related transcutaneous vagus nerve stimulation modulates behaviour and pupillary responses during an auditory oddball task. Psychoneuroendocrinology, 140, 105719. https://doi.org/10.1016/j.psyneuen.2022.105719
2-year Impact Factor: 3.700|2022
Times cited: 14|2025-02-17
Indexed document: Yes
Quartile: Q2
Keywords: Vagus nerve / TaVNS / Oddball paradigm / Locus coeruleus / Pupil size / Noradrenaline

Event-related transcutaneous vagus nerve stimulation modulates behaviour and pupillary responses during an auditory oddball task

Event-related transcutaneous vagus nerve stimulation modulates behaviour and pupillary responses during an auditory oddball task