Katia Lehongre|Franck Ramus|Nadège Villiermet|Denis Schwartz|Anne?Lise Giraud
Altered Low-Gamma Sampling in Auditory Cortex Accounts for the Three Main Facets of Dyslexia
Laboratoire de Sciences Cognitives et Psycholinguistique|Institut du Cerveau|Laboratoire de Neurosciences Cognitives|Institut d'Imagerie Biomédicale|Laboratoire de Neurosciences Cognitives
recently conjectured dyslexia arises abnormal auditory sampling sampling rate altered affects reading remains unclear hypothesized impairing phonemic parsing abnormal lowgamma sampling could yield phonemic representations unusual format disrupt phonological processing verbal memory using magnetoencephalography behavioral tests show dyslexic subjects reduced lefthemisphere bias phonemic processing reflected less entrainment 30 hz acoustic modulations left auditory cortex deficit correlates measures phonological processing rapid naming observed enhanced cortical entrainment rates beyond 40 hz dyslexics show particularity associated verbal memory deficit data suggest single auditory anomaly ie phonemic oversampling left auditory cortex accounts three main facets linguistic deficit dyslexia