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Psychol Med. 2005 Jun;35(6):783-9.

Reduced volume of parietal and frontal association areas in patients with schizophrenia characterized by passivity delusions.

Author information

1
Melbourne Neuropsychiatry Centre, Department of Psychiatry, The University of Melbourne & Sunshine Hospital, St Albans, Melbourne, Australia.

Abstract

BACKGROUND:

In patients with schizophrenia, passivity delusions are characterized by a difficulty in determining the agency of purposive actions. Neuropsychological and functional neuroimaging data suggest that passivity delusions are associated with dysfunction of the parietal lobe association cortex.

METHOD:

Cortical volume calculated from magnetic resonance imaging data in a group of 12 patients with schizophrenia characterized by motor passivity delusions was compared statistically with the cortical volume of 11 patients without passivity delusions.

RESULTS:

Reduced cortical volume was observed in parietal and frontal association cortices in the passivity group.

CONCLUSIONS:

These data provide direct evidence for the involvement of the parietal lobe in the pathophysiology of passivity delusions in schizophrenia.

PMID:
15997599
[Indexed for MEDLINE]
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