Theory of mind impairments in patients with semantic dementia.: ToM in semantic dementia

Abstract : Semantic dementia is characterized by semantic deficits and behavioural abnormalities that occur in the wake of bilateral inferolateral and predominantly left-sided anterior temporal lobe atrophy. The temporal poles have been shown to be involved in theory of mind, namely the ability to ascribe cognitive and affective mental states to others that regulates social interactions by predicting and interpreting human behaviour. However, very few studies have examined theory of mind in semantic dementia. In this study, we investigated both cognitive and affective theory of mind in a group of patients with semantic dementia, using separate objective and subjective assessment tasks. Results provided objective evidence of an impact of semantic dementia on cognitive and affective theory of mind, consistent with the patients' atrophy in the left temporal lobe and hypometabolism in the temporal lobes and the medial frontal cortex. However, the subjective assessment of theory of mind suggested that awareness of the affective but not cognitive theory of mind deficit persists into the moderate stage of the disease.
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Brain - A Journal of Neurology , Oxford University Press (OUP), 2012, 135 (Pt 1), pp.228-41. 〈10.1093/brain/awr309〉
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Céline Duval, Alexandre Bejanin, Pascale Piolino, Mickael Laisney, Vincent De La Sayette, et al.. Theory of mind impairments in patients with semantic dementia.: ToM in semantic dementia. Brain - A Journal of Neurology , Oxford University Press (OUP), 2012, 135 (Pt 1), pp.228-41. 〈10.1093/brain/awr309〉. 〈inserm-00642036〉

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