Default mode network subsystem alterations in obsessive-compulsive disorder.
Br J Psychiatry
; 205(5): 376-82, 2014 Nov.
Article
en En
| MEDLINE
| ID: mdl-25257066
ABSTRACT
BACKGROUND:
Although neurobiological models of obsessive-compulsive disorder (OCD) traditionally emphasise the central role of corticostriatal brain regions, studies of default mode network integrity have garnered increasing interest, but have produced conflicting results.AIMS:
To resolve these discrepant findings by examining the integrity of default mode network subsystems in OCD.METHOD:
Comparison of seed-based resting-state functional connectivity of 11 default mode network components between 46 patients with OCD and 46 controls using functional magnetic resonance imaging.RESULTS:
Significantly reduced connectivity within the dorsal medial prefrontal cortex self subsystem was identified in the OCD group, and remained significant after controlling for medication status and life-time history of affective disorders. Further, greater connectivity between the self subsystem and salience and attention networks was observed.CONCLUSIONS:
Results indicate that people with OCD show abnormalities in a neural system previously associated with self-referential processing in healthy individuals, and suggest the need for examination of dynamic interactions between this default mode network subsystem and other large-scale networks in this disorder.
Texto completo:
1
Base de datos:
MEDLINE
Asunto principal:
Encéfalo
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Red Nerviosa
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Trastorno Obsesivo Compulsivo
Tipo de estudio:
Diagnostic_studies
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Prognostic_studies
Límite:
Adult
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Female
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Humans
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Male
Idioma:
En
Revista:
Br J Psychiatry
Año:
2014
Tipo del documento:
Article