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BIAL Foundation
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DE:"Short trials"
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DocumentSingle trial classification of magnetoencephalographic recordings using granger causality2011

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-2008
Location: Arquivo PCA - Pastas 1 a
Title:
2008 Grants
Start date: 2009-01

Reference code: PT/FB/BL-2008-032
Location: Arquivo PCA - Pasta 8/2008
Title:
032 - Conscious will and voluntary actions: is there a last ventriloquist in the brain?
Duration: 2009-04 - 2012-02
Researcher(s):
Jose Luis Perez Velazquez, Richard Wennberg, Luis Garcia Dominguez
Institution(s): Hospital for Sick Children, University of Toronto (Canada)
Contents: Contents:
Bursary agreement
Application form
Correspondence
Financial report and expenditure documents
Progress reports
Final report
Articles
Language: eng
Author:
Perez Velazquez, J. L.
Secondary author(s):
Wennberg, R., Garcia Dominguez, L.
Number of reproductions:
1
Keywords:
Psychophysiology / Cognitive processes / Decision-making / Brain structure and function

Reference code: PT/FB/BL-2008-032.03
Location: Arquivo PCA - Pasta 8/2008
Title:
Single trial classification of magnetoencephalographic recordings using granger causality
Publication year: 2011
URL:
http://www.ncbi.nlm.nih.gov/pubmed/21600926
Abstract/Results: ABSTRACT:
The use of Granger causality (GC) for studying dependencies in neuroimaging data has recently been gaining popularity. Several frameworks exist for applying GC to neurophysiological questions but many rely heavily on specific statistical assumptions regarding autoregressive (AR) models for hypothesis testing. Since it is often difficult to satisfy these assumptions in practical settings, this study proposes an alternative statistical methodology based on the classification of individual trials of data. Instead of testing for significance using statistics based on estimated AR models or prediction errors, hypotheses were tested by determining whether or not individual magnetoencephalography (MEG) recording segments belonging to either of two experimental conditions can be successfully classified using features derived from AR and GC concepts. Using this novel approach, we show that bivariate temporal GC can be used to distinguish button presses based on whether they were experimentally forced or free. Additionally, the methodology was used to determine useful parameter settings for various steps of the analysis and this revealed surprising insight into several aspects of AR and GC analysis which, previously, could not be obtained in a comparable manner. A final mean accuracy of 79.2% was achieved for classifying forced and free button presses for 6 subjects suggesting that classification using GC features is a viable option for studying MEG signals and useful for evaluating the effectiveness of parameter variations in GC analysis.
Accessibility: Document exists in file
Copyright/Reproduction:
By permission
Language:
eng
Author:
Kostelecki, W.
Secondary author(s):
Garcia Dominguez, L., Perez Velazquez, J. L.
Document type:
Article
Number of reproductions:
1
Reference:
Kostelecki, W., Garcia Dominguez, L., Perez-Velazquez, J. (2011). Single trial classification of magnetoencephalographic recordings using Granger causality. Journal of Neuroscience Methods, 199(2), 183-191. https://doi.org/10.1016/j.jneumeth.2011.04.032
2-year Impact Factor: 1.980|2011
Times cited: 3|2024-02-01
Indexed document: Yes
Quartile: Q3
Keywords: Granger causality / Autoregression models / Classification / Magnetoencephalography / Short trials

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