Distinct brain activation in response to negative feedback at different stages in a variant of the Wisconsin Card Sorting Test

Positive or negative feedback is usually used to maintain or shift a sorting rule in the Wisconsin Card Sorting Test (WCST). Previous studies have demonstrated that negative feedback evokes a larger P3 than positive feedback. However, it is unclear whether the neural response is different for negative feedback appearing at different stages of the WCST. We compared ERPs evoked by the negative feedback appearing at the rule-switching stage...