The neural dynamics of stimulus and response conflict processing as a function of response complexity and task demands.

ABSTRACT: Both stimulus and response conflict can disrupt behavior by slowing response times and decreasing accuracy. Although several neural activations have been associated with conflict processing, it is unclear how specific any of these are to the type of stimulus conflict or the amount of response conflict. Here, we recorded electrical brain activity, while manipulating the type of stimulus conflict in the task (spatial [Flanker] versus semantic [Stroop]) and the amount of response conflict (two versus four response choices). Behaviorally, responses were slower to incongruent versus congruent stimuli across all task and response types, along with overall slowing for higher response-mapping complexity. The earliest incongruency-related neural effect was a short-duration frontally-distributed neg

SUBMITTER: Donohue SE 

PROVIDER: S-EPMC4808442 | biostudies-literature | 2016 Apr

REPOSITORIES: biostudies-literature