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Science. 2008 Jul 18;321(5887):421-2. doi: 10.1126/science.1154433.

Orbitofrontal dysfunction in patients with obsessive-compulsive disorder and their unaffected relatives.

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1
Department of Psychiatry, University of Cambridge, Addenbrooke's Hospital, Box 189, Cambridge CB2 0QQ, UK. srchamb@gmail.com

Abstract

Obsessive-compulsive disorder (OCD) is characterized by repetitive thoughts and behaviors associated with underlying dysregulation of frontostriatal circuitry. Central to neurobiological models of OCD is the orbitofrontal cortex, a neural region that facilitates behavioral flexibility after negative feedback (reversal learning). We identified abnormally reduced activation of several cortical regions, including the lateral orbitofrontal cortex, during reversal learning in OCD patients and their clinically unaffected close relatives, supporting the existence of an underlying previously undiscovered endophenotype for this disorder.

PMID:
18635808
DOI:
10.1126/science.1154433
[Indexed for MEDLINE]
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