Gesture comprehension, knowledge and production in Alzheimer's disease

European Journal of Neurology : the Official Journal of the European Federation of Neurological Societies
M RousseauxM A Mackowiak-Cordoliani

Abstract

Although apraxia is a typical consequence of Alzheimer's disease (AD), the profile of apraxic impairments is still subject to debate. Here, we analysed apraxia components in patients with AD with mild-to-moderate or moderately severe dementia. Thirty-one patients were included. We first evaluated simple gestures, that is, the imitation of finger and hand configurations, symbolic gestures (recognition, production on verbal command and imitation), pantomimes (recognition, production on verbal command, imitation and production with the object), general knowledge and complex gestures (tool-object association, function-tool association, production of complex actions and knowledge about action sequences). Tests for dementia (Mini Mental State Examination and the Dementia Rating Scale), language disorders, visual agnosia and executive function were also administered. Compared with controls, patients showed significant difficulties (P ≤ 0.01) in subtests relating to simple gestures (except for the recognition and imitation of symbolic gestures). General knowledge about tools, objects and action sequences was less severely impaired. Performance was frequently correlated with the severity of dementia. Multiple-case analyses revealed that...Continue Reading

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Aug 2, 2013·Neuropsychology Review·Mathieu LesourdFrançois Osiurak
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