Decoding covert spatial attention using electrocorticographic (ECoG) signals in humans.

TitleDecoding covert spatial attention using electrocorticographic (ECoG) signals in humans.
Publication TypeJournal Article
Year of Publication2012
AuthorsGunduz, A, Brunner, P, Daitch, A, Leuthardt, EC, Ritaccio, AL, Pesaran, B, Schalk, G
Date Published05/2012
Keywordscovert attention, electrocorticography (ECoG), visual spatial attention

This study shows that electrocorticographic (ECoG) signals recorded from the surface of the brain provide detailed information about shifting of visual attention and its directional orientation in humans. ECoG allows for the identification of the cortical areas and time periods that hold the most information about covert attentional shifts. Our results suggest a transient distributed fronto-parietal mechanism for orienting of attention that is represented by different physiological processes. This neural mechanism encodes not only whether or not a subject shifts their attention to a location, but also the locus of attention. This work contributes to our understanding of the electrophysiological representation of attention in humans. It may also eventually lead to brain-computer interfaces (BCIs) that optimize user interaction with their surroundings or that allow people to communicate choices simply by shifting attention to them.

Alternate JournalNeuroimage
PubMed ID22366333
PubMed Central IDPMC3321088

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