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Langage et maladie d'Alzheimer : analyse multidimensionnelle d'un discours pathologique

Abstract : This study deals with a multidimensional analysis of language attrition in normal aging and in Alzheimer’s disease. A comparative analysis of spontaneous speech was conducted through three linguistic levels : 1) the phonetic-phonological level ; 2) the lexical-semantic level ; 3) the syntactic level. Our results show that the discourse produced by Alzheimer patients differs significantly from that produced by healthy elderly by a more disfluent speech, a significant reduction of the vocabulary diversity and discourse informativeness, and finally, by a remarkable reduction in syntactic complexity. Our results contribute to understand better the linguistic profile of Alzheimer’s patients. We show that a better understanding of language disorders associated with this pathology may contribute in a meaningful way to improve early and / or differential diagnosis of Alzheimer’s disease. In term of application, the goal of this research is to develop a language assessment tool adapted to the demented elderly. Through this work we hope to have contributed to the further development of speech therapy (i.e. non-pharmacological treatment) useful for the maintenance or improvement of the communicative capacity of patients suffering from Alzheimer’ disease.
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https://tel.archives-ouvertes.fr/tel-00812618
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Hyeran Lee. Langage et maladie d'Alzheimer : analyse multidimensionnelle d'un discours pathologique. Linguistique. Université Paul Valéry - Montpellier III, 2012. Français. ⟨NNT : 2012MON30059⟩. ⟨tel-00812618v2⟩

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