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.
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.
Authors: Thomas J Whitford; Marek Kubicki; Paula E Pelavin; Diandra Lucia; Jason S Schneiderman; Christos Pantelis; Robert W McCarley; Martha E Shenton Journal: Schizophr Res Date: 2014-10-11 Impact factor: 4.939
Authors: Stefan Brauns; Randy L Gollub; Joshua L Roffman; Anastasia Yendiki; Beng-Choon Ho; Thomas H Wassink; Andreas Heinz; Stefan Ehrlich Journal: Neuroimage Date: 2011-05-27 Impact factor: 6.556
Authors: Henriette D Heering; Godefridus J C Koevoets; Laura Koenders; Marise W J Machielsen; Carin J Meijer; Manabu Kubota; Jessica de Nijs; Wiepke Cahn; Hilleke E Hulshoff Pol; Lieuwe de Haan; Rene S Kahn; Neeltje E M van Haren Journal: Front Psychiatry Date: 2015-07-29 Impact factor: 4.157