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FI
7.991

26382955

2015 British Journal of Psychiatry

Structural and functional brain changes in delusional disorder.

Vicens V, Radua J, Salvador R, Anguera-Camós M, Canales-Rodríguez EJ, Sarró S, Maristany T, McKenna PJ, Pomarol-Clotet E

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Abstract

BackgroundDelusional disorder has been the subject of very little investigation using brain imaging.AimsTo examine potential structural and/or functional brain abnormalities in this disorder.MethodWe used structural imaging (voxel-based morphometry, VBM) and functional imaging (during performance of the n-back task and whole-brain resting connectivity analysis) to examine 22 patients meeting DSM-IV criteria for delusional disorder and 44 matched healthy controls.ResultsThe patients showed grey matter reductions in the medial frontal/anterior cingulate cortex and bilateral insula on unmodulated (but not on modulated) VBM analysis, failure of de-activation in the medial frontal/anterior cingulate cortex during performance of the n-back task, and decreased resting-state connectivity in the bilateral insula.ConclusionsThe findings provide evidence of brain abnormality in the medial frontal/anterior cingulate cortex and insula in delusional disorder. A role for the former region in the pathogenesis of delusions is consistent with several other lines of evidence.