Cognitive electrophysiology of frontal brain functions: I. Cognitive control

Introduction and Method: Modifications of the Wisconsin Card Sorting Test (WCST) were established. In these new task variants, participants were asked to exert sequential control over attentional sets or over intentional sets (task domain factor). Attentional set shifting requires to change the priorities by which sensory stimuli are selected, whereas intentional set shifting requires to change the priorities by which motor responses are selected. Auditory stimuli that signaled to maintain or shift set were presented immediately before (pre-cuing) or after (post-cuing) the selection of cards (cue timing factor).…