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Editorial: Word Morphology and Written Language Acquisition: Insights From Typical and Atypical Development in Different Orthographies
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Differential language network functional connectivity alterations in Alzheimer's disease and the semantic variant of primary progressive aphasia
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Visual and auditory perceptual strength norms for 3,596 French nouns and their relationship with other psycholinguistic variables
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L'impact des variables sémantiques sur le traitement des mots
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The role of the hippocampus in the semantic variant of primary progressive aphasia : a resting‐state fcMRI study
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Norms of concept familiarity and emotional valence for 3,596 French nouns and their contribution in lexical decision
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The Role of the Left Anterior Temporal Lobe for Unpredictable and Complex Mappings in Word Reading
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The role of the left anterior temporal lobe for unpredictable and complex mappings in word reading
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Comprehension of concrete and abstract words in semantic variant primary progressive aphasia and Alzheimer’s disease: a behavioral and neuroimaging study
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Naming unique entities in the semantic variant of primary progressive aphasia and Alzheimer's disease : Towards a better understanding of the semantic impairment
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Bilingual lexical selection as a dynamic process:evidence from Arabic-French bilinguals
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La sémantique, la lecture de mots irréguliers et les lobes temporaux antérieurs
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Abstract:
Dans cette recension des écrits nous présentons les résultats d’études comportementales et de neuroimagerie mettant en rapport la sémantique et la lecture de mots irréguliers, ainsi que la sémantique et les lobes temporaux antérieurs (LTA). Plus particulièrement, nous nous concentrons sur l’atteinte de la lecture à voix haute de mots irréguliers, soit la dyslexie de surface, chez la variante sémantique de l’Aphasie Primaire Progressive (vsAPP). Cette maladie neurodégénérative débute par l’atrophie des lobes temporaux antérieurs et touche d’abord la mémoire sémantique. À partir des études comportementales, il est possible de conclure que la dyslexie de surface est très souvent observée chez des patients atteints de vsAPP. Ceci semble mettre en avant le rapport entre la dyslexie de surface et la dégradation de la mémoire sémantique chez ce type de patients. De plus, la nature neurodégénérative de la vsAPP a permis d’établir le rapport entre l’atteinte sémantique et les LTA. Les études de neuroimagerie menées auprès des participants sains ont aussi mis en évidence le rôle des LTA lors du traitement sémantique et lors de la lecture de mots irréguliers. Le rôle des LTA en lecture de mots irréguliers semblerait être celui de la sémantique, plutôt que celui de la lecture ellemême. En somme, les modèles théoriques et computationnels qui postulent l’activation sémantique pour la lecture de mots irréguliers permettraient d’expliquer le profil de lecture et l’atteinte sémantique trouvés en vsAPP, ainsi que le réseau de lecture de mots irréguliers qui inclut le LTA gauche. ; This review presents the results of behavioural and neuroimaging studies that address the relationship between semantics, irregular word reading and the anterior temporal lobes (ATLs). In particular we focused on acquired surface dyslexia, i.e., irregular word reading impairment , in patients suffering from the semantic variant of primary progressive aphasia (svPPA). svPPA is a neurodegenerative disease that occurs following the atrophy of the ATLs. This disease is early characterized by semantic memory impairments. Taken together, behavioural studies show that svPPA patients often suffer from acquired surface dyslexia. This pattern highlights the relationship between acquired surface dyslexia and semantic knowledge degradation in svPPA. Moreover, the neurodegenerative nature of svPPA has pointed out to the relationship between semantic impairment and the ATLs. Neuroimaging studies in healthy participants have also provided evidence of the role of the ATLs in semantic processing and irregular word reading. The ATLs seem to be related to semantic processing in irregular word reading, more than to irregular word reading itself. In sum, the results of the studies reviewed here provide evidence for theoretical and computational models that predict semantic activation during irregular word reading. This semantic contribution can explain the profile of surface dyslexia in svPPA, as well as the brain network that sustains the processing of this type of words and that includes the left ATL.
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Keyword:
Anterior temporal lobes; Degenerative disease; Lecture; Lobes temporaux antérieurs; Maladie dégénérative; Neuroimagerie; Neuroimaging; Reading; Semantic variant of primary progressive aphasia; Semantics; Sémantique; Variante sémantique de l’Aphasie Primaire Progressive
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URL: http://hdl.handle.net/1866/22391
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Semantic Dementia without Surface Dyslexia in Spanish: Unimpaired Reading with Impaired Semantics
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'priming' sintáctico en la producción de oraciones en español: acerca de la representación sintáctica de los verbos
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In: RLA. - Concepción 46 (2008) 2, 11-27
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