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

Aysegul Gunduz, Peter Brunner, Amy Daitch, Eric C. Leuthardt, Anthony L. Ritaccio, Bijan Pesaran, Gerwin Schalk

Research output: Contribution to journalArticlepeer-review


This study shows that electrocorticographic (ECoG) signals recorded from the surface of the brain provide detailedinformation 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 ornot 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 peopleto communicate choices simply by shifting attention to them.

Original languageEnglish (US)
Pages (from-to)2285-2293
Number of pages9
Issue number4
StatePublished - May 1 2012


  • Covert attention
  • Electrocorticography (ECoG)
  • Visual spatial attention

ASJC Scopus subject areas

  • Neurology
  • Cognitive Neuroscience


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