Cortical correlates of perceptual decision making during tactile spatial pattern discrimination.

ABSTRACT: Perceptual decision making involves a distributed cortical network including areas related to sensory feature extraction, decision formation, and finally signalling the decision through a motor response. Although these processing steps are supposed to occur in sequence, the seemingly instant mapping of a perceptual decision onto a motor response renders these processes almost indistinguishable. To dissociate cortical areas related to sensory decision making from areas that prepare the subsequent motor response, we performed functional magnetic resonance imaging during a tactile spatial pattern discrimination task with interleaved immediate and delayed response conditions. Decision difficulty was manipulated parametrically by adding spatial noise to the tactile patterns, resulting in a rise

SUBMITTER: Li Hegner Y 

PROVIDER: S-EPMC6869279 | biostudies-literature | 2015 Sep

REPOSITORIES: biostudies-literature