Abstract：
:We present an MEG/EEG framework to reveal statistically significant brain areas engaged in the same cognitive process across trials without resort to averaging procedures. The variability of neuronal responses is assumed to take place only in the reconstructed time series of cortical sources and not in their positions. This hypothesis allows the use of the surrogate data method to detect recurrently active brain areas across trials adjusted with any cortically constrained focal MEEG inverse solution. Results obtained from synthetic data show that considering several trials enhances the accuracy of the source localisation. We apply this approach on MEG data recorded during a simple visual stimulation. The considered stimulus is frequency tagged in order to reveal the neural network correlated to its perception using phase synchronisation analysis. The results show consistent patterns of distributed synchronous networks centred on occipital areas.
journal_name
Neuroimagejournal_title
NeuroImageauthors
David O,Cosmelli D,Hasboun D,Garnero Ldoi
10.1016/s1053-8119(03)00221-0keywords:
subject
Has Abstractpub_date
2003-09-01 00:00:00pages
186-201issue
1eissn
1053-8119issn
1095-9572pii
S1053811903002210journal_volume
20pub_type
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