Goal-directed selective attention and response competition monitoring: Evidence from unilateral parietal and anterior cingulate lesions

Abstract

Competing visual stimuli lead to slower responses to targets. This response competition must be resolved before correct responses are executed. Neuroimaging suggests that response competition monitoring may be subserved by an integrated neural network including the anterior cingulate cortex (ACC). In this study, 1 patient with a parietal lesion (Patient J.S.) and 1 with an ACC lesion (Patient G.M.) were presented with 2 ranker tasks; 1 required verbal identification of color targets, and the other required an opposite response to targets (e.g., see red and say 'green'); a control group was also tested. For controls, perceptually incongruent rankers interfered with the ability to inhibit prep..