Parkinsonian patients with deficits in the dysexecutive spectrum are impaired on theory of mind tasks.

Abstract:

:Understanding the mental states of others entails a number of cognitive processes known as Theory of Mind (ToM). A relationship between ToM deficits and executive disorders has been hypothesized in individuals with Parkinson's disease (PD). The present study was aimed at investigating the effect of dysexecutive deficits on ToM abilities in PD patients without dementia. Participants included 30 PD patients and 30 healthy subjects (HC). PD patients were divided into two groups according to their executive test performance: patients with poor (dysexecutive group; n=15) and normal (executively unimpaired group; n=15) performance. All participants were administered faux pas recognition written stories. The dysexecutive PD patients performed less accurately than both HC and executively unimpaired PD individuals on all faux pas story questions (p< 0.05); the executively unimpaired PD group performed as accurately as the HC group on the ToM tasks. Results of the study clearly demonstrate that PD is not tout court associated with ToM impairments and that these may occur in PD patients as a function of the degree of their executive impairment. Our findings also indirectly confirm previous data on the role of the prefrontal regions in mediating ToM capacities.

journal_name

Behav Neurol

journal_title

Behavioural neurology

authors

Costa A,Peppe A,Martini M,Coletta K,Oliveri M,Caltagirone C,Carlesimo GA

doi

10.3233/BEN-129018

subject

Has Abstract

pub_date

2013-01-01 00:00:00

pages

523-33

issue

4

eissn

0953-4180

issn

1875-8584

pii

67U003J523W36137

journal_volume

27

pub_type

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