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Thèse soutenue

Bases neurales de la compréhension de la phrase affective : des fonctions ortholinguistiques à la prosodie affective

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Auteur / Autrice : Virginie Beaucousin
Direction : Nathalie Tzourio-Mazoyer
Type : Thèse de doctorat
Discipline(s) : Physiologie, biologie des organismes, populations, interactions
Date : Soutenance en 2006
Etablissement(s) : Caen

Résumé

FR

We investigate the neural basis of affective sentence comprehension that requires the ortholinguistic processing of phonology, semantics and syntax, and the paralinguistic processing of affective prosody. The first chapter presents a meta-analysis of 129 neuroimaging studies on language. 727 activation peaks in the left hemisphere were submitted to a spatial segregation algorithm to map left cortical areas implicated in phonological, semantic and syntactic processing. The second chapter describes through two psycholinguistic studies and one fMRI study the comprehension of affective sentence during two tasks of affective and grammatical classification. After the validation of the corpus of sentences with neutral and affective lexical content, an impact of affective prosody is observed on the response and response time of the subjects to the affective classification of sentences with affective lexical content. The fMRI study highlights the interaction of three neural networks during affective sentences comprehension: 1- the cortical network in charge of ortholinguistic processing during the affective and grammatical classification of sentences with affective and neutral lexical content; 2- the cortical areas of mental state inferences only recruited by the classification of affective sentences with or without prosody; 3- right superior temporal areas implicated in affective prosody processing. Affective verbal communication requires the integration of ortho- and paralinguistic elements and also mental state inferences