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Neuropsychopharmacology. 2016 Apr;41(5):1241-50. doi: 10.1038/npp.2015.273. Epub 2015 Sep 10.

Neural Dysfunction in Cognitive Control Circuits in Persons at Clinical High-Risk for Psychosis.

Author information

1
Department of Psychiatry, The New York State Psychiatric Institute, Columbia College of Physicians and Surgeons, New York, NY, USA.
2
Center for Developmental Neuropsychiatry, The New York State Psychiatric Institute, Columbia College of Physicians and Surgeons, New York, NY, USA.
3
Institute for the Developing Mind, Children's Hospital Los Angeles, Keck School of Medicine at the University of Southern California, Los Angeles, CA, USA.

Abstract

Cognitive control, a set of functions that develop throughout adolescence, is important in the pathogenesis of psychotic disorders. Whether cognitive control has a role in conferring vulnerability for the development of psychotic illness is still unknown. The aim of this study was to investigate the neural systems supporting cognitive control in individuals deemed to be potentially prodromal for psychotic illness. We recruited 56 participants at clinical high-risk (CHR) for psychosis based on the Structured Interview for Psychosis-Risk Syndromes (SIPS) and 49 healthy controls. Twelve of the CHR participants eventually developed psychosis. We compared functional magnetic resonance imaging (fMRI) BOLD signal during the performance of the Simon task. We tested for differences between CHR individuals and controls in conflict-related functional activity. In the CHR group when compared with controls, we detected smaller conflict-related activations in several cortical areas, including the Dorsolateral Prefrontal Cortex (DLPFC). Furthermore, conflict-related activations in the DLPFC of those CHR individuals who ultimately developed psychosis (CHR converters) were smaller than in non-converters (CHR non-converters). Higher levels of conflict-related activation were associated with better social and role outcome. Risk for psychosis was associated at the neural level with reduced conflict-related brain activity. This neural phenotype appears correlated within the DLPFC with the development of psychosis and with functional outcome.

PMID:
26354046
PMCID:
PMC4793108
DOI:
10.1038/npp.2015.273
[Indexed for MEDLINE]
Free PMC Article

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