Oscillatory activity in neocortical networks during tactile discrimination near the limit of spatial acuity.

ABSTRACT: Oscillatory interactions within functionally specialized but distributed brain regions are believed to be central to perceptual and cognitive functions. Here, using human scalp electroencephalography (EEG) recordings combined with source reconstruction techniques, we study how oscillatory activity functionally organizes different neocortical regions during a tactile discrimination task near the limit of spatial acuity. While undergoing EEG recordings, blindfolded participants felt a linear three-dot array presented electromechanically, under computer control, and reported whether the central dot was offset to the left or right. The average brain response differed significantly for trials with correct and incorrect perceptual responses in the timeframe approximately between 130 and 175ms. D

SUBMITTER: Adhikari BM 

PROVIDER: S-EPMC4307021 | biostudies-literature | 2014 May

REPOSITORIES: biostudies-literature