Anterior cingulate cortex activation is related to learning potential on the WCST in schizophrenia patients

Brain and Cognition
Anya PedersenPatricia Ohrmann

Abstract

The remediation of executive function in patients with schizophrenia is important in rehabilitation because these skills affect the patient's capacity to function in the community. There is evidence that instructional techniques can improve deficits in the Wisconsin Card Sorting Test (WCST) in some schizophrenia patients. We used a standard test/training phase/standard test format of the WCST to classify 36 schizophrenia patients as high-achievers, learners or non-retainers. All healthy controls performed as high-achievers. An event-related fMRI design assessed neural activation patterns during post-training WCST performance. Patients showed a linear trend between set-shifting related activation in the anterior cingulate cortex and learning potential, i.e. increased activation in high-achievers, a trend for increased activation in learners, and no activation in non-retainers compared to controls. In addition, activation in the temporoparietal cortex was highest in patients classified as learners, whereas in non-retainers activation was increased in the inferior frontal gyrus compared to controls and high-achieving patients. These results emphasize the relevance of the ACC's neural integrity in learning set-shifting strategies f...Continue Reading

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Citations

Aug 5, 2014·Journal of Psychiatric Research·Doug Hyun HanPerry F Renshaw
Jan 14, 2016·NeuroImage. Clinical·Michele KorostilAnthony Randal McIntosh
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