Response competition and response inhibition during different choice-discrimination tasks: Evidence from ERP measured inside MRI scanner

摘要: We investigated the neural correlates underlying response inhibition and conflict detection processes using ERPs source localization analyses simultaneously acquired during fMRI scanning. were elicited by a simple reaction time task (SRT), Go/NoGo task, Stroop-like (CST). The cognitive was thus manipulated in order to probe degree which information processing is shared across systems. proposed dissociate interference effects on brain activity identical congruent/incongruent stimuli all three contexts while varying required. NoGo-incongruent trials showed larger N2 enhanced activations of rostral anterior cingulate cortex (ACC) pre-supplementary motor area, whereas Go-congruent P3 increased parietal activations. Congruent incongruent conditions CST also similar N2, late negativity (LN) ERPs, though CST-incongruent revealed LN prefrontal ACC Considering stimulus probability experimental manipulation our study, current findings suggest that NoGo frontal appear be more associated rather than specific monitoring, occipito-parietal Go may linked planned competition between prepared required response. LN, however, appears related higher level monitoring with choice-discrimination but not when presence inhibition.