[BIC-announce] Seminar in Biomedical Engineering - Wednesday May8th - 1 pm - Room 333

[Christophe Grova]

Dear all,


Our next Biomedical Engineering Dpt seminar  is today 

Wednesday - May 8th ,  at 1 pm

Location: Room  333 Lyman Duff Building (Biomedical Engineering Dpt, 3775  University Street). 
 
Speaker: Dr. Stephane Sockeel Ph.D., Post-doctoral Fellow under the supervision of Dr J. Doyon, Centre de Recherche de l'Institut Universitaire de Gériatrie de Montréal. Dr Sockeel obtained his PhD at Université Pierre et Marie Curie, Paris 6 (France) under the supervision of Dr H. Benali and Dr. L. Garnero
   
Title: Large-scale functional networks detection in EEG and study of dynamics of functional connectivity

Abstract:
The main goal of this work is to adress these two questions: 
Could electroencephalography (EEG) detect large-scale functional networks? 
What contribution could bring EEG in the study of the dynamics of connectivity?

We have developed an original method specifically for EEG to detect large-scale functional networks in the brain. We first assume that BOLD signal in fMRI is correlated with the power of EEG signal and then, we applied a spatial Independent Components Analysis (sICA). The main advantages when compared to other standard  methods (seed-based methods, atlas,...) are: a fully data-driven method, use of individual sICA and a group analysis, multifrequency analysis.
We validated our method with a comparison with a fMRI study on healthy subjects during resting state and visual tasks. The networks detected with EEG and fMRI overlap. Then, we have studied the dynamics of connectivity inside the extracted EEG networks using three connectivity measures. The temporal precision of EEG can evaluate connection and information flow between these regions and provide  access to a frequency scale similar to that of brain's rhythms. This study has provided some interesting and promising results, as for example a memory trace after a visual task in the visual network.



A list of upcoming seminars can be found at : http://www.mcgill.ca/bme/news/seminars

See you there 

 
Christophe Grova 


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Christophe Grova, PhD
Assistant Professor
Biomedical Engineering Dpt
Neurology and Neurosurgery Dpt

Montreal Neurological Institute
Centre de Recherches Mathématiques

Biomedical Engineering Department - Room 304
McGill University
3775 University Street, Montreal, Quebec, Canada, H3A 2B4
email : christophe.grova at mcgill.ca
tel : (514) 398 2516
fax : (514) 398 7461
 
web:
http://www.mni.mcgill.ca/research/gotman/members/christophe.html
http://www.bmed.mcgill.ca/
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