Titre
When all hypotheses are right: a multifocal account of dyslexia.
Type
article
Institution
Externe
Périodique
Auteur(s)
Pernet, C.
Auteure/Auteur
Andersson, J.
Auteure/Auteur
Paulesu, E.
Auteure/Auteur
Demonet, J.F.
Auteure/Auteur
Liens vers les personnes
ISSN
1097-0193
Statut éditorial
Publié
Date de publication
2009
Volume
30
Numéro
7
Première page
2278
Dernière page/numéro d’article
2292
Peer-reviewed
Oui
Langue
anglais
Notes
Publication types: Journal ArticlePublication Status: ppublish. PDF type: Research Article
Résumé
Many hypotheses have been proposed about the brain underpinnings of developmental dyslexia, but none of them accommodates the variable deficits observed. To address the issue of anatomical deficits in dyslexia; total and partial volumes, lateralization indices (LI), and local gray matter volumes (LGMV) were measured. Analyses were performed in large samples of control and dyslexic subjects, and in correlation with their performance on phonological, reading, and spelling tests. Results indicate an absence of net differences in terms of volumes but significant continuities and discontinuities between groups in their correlations between LI, LGMV, and performances. Structural connectivity also highlighted correlations between areas showing (dis)continuities between control and dyslexic subjects. Overall, our data put forward the idea of a multifocal brain abnormalities in dyslexia with a major implication of the left superior temporal gyrus, occipital-temporal cortices, and lateral/medial cerebellum, which could account for the diverse deficits predicted by the different theories.
PID Serval
serval:BIB_062B70CFAED5
PMID
Date de création
2013-03-24T18:16:51.263Z
Date de création dans IRIS
2025-05-20T14:18:37Z