Remediation effects on N170 and P300 in children with developmental dyslexia.

Détails

ID Serval
serval:BIB_C47BFF442E44
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Titre
Remediation effects on N170 and P300 in children with developmental dyslexia.
Périodique
Behavioural Neurology
Auteur(s)
Jucla M., Nenert R., Chaix Y., Demonet J.F.
ISSN
1875-8584 (Electronic)
ISSN-L
0953-4180
Statut éditorial
Publié
Date de publication
2010
Peer-reviewed
Oui
Volume
22
Numéro
3-4
Pages
121-129
Langue
anglais
Notes
Publication types: Journal Article ; Research Support, Non-U.S. Gov't Publication Status: ppublish
Résumé
This study aimed at investigating the ERP correlates (N170 and P300 components) of a multimodal training program focused in dyslexia. ERPs were obtained from 32 electrodes in 24 French children with developmental dyslexia (mean age 10 years 7 months) during a visual lexical decision task. All the children received two intensive two-month evidence-based training programs: one based on phonemic awareness and the other on visual and orthographic processing in a cross-over design. Ten control children matched on chronological age were also tested. We showed dissociation between N170, P300 and behavioral improvement. In the dyslexic group, P300 amplitude decreased for non-words and words as the latter yielded performance improvement. In the control group, the same effect was observed for pseudo-words. At the same time, the opposite pattern occurred for the N170 latency, which was shortened for pseudo-words and pseudo-homophones in the dyslexic group and for words in the typically achieving children. We argue that training might modulate cortical activity in dyslexic children in a visual word recognition task. Considering the well-known implication of P300 in attentional processes, our results reflect the strong link between reading skill improvement after remediation and visual attentional process maturation.
Mots-clé
Attention/physiology, Brain/physiopathology, Case-Control Studies, Child, Cross-Over Studies, Dyslexia/physiopathology, Dyslexia/therapy, Electroencephalography, Event-Related Potentials, P300, Evoked Potentials, Female, France, Humans, Language Tests, Language Therapy, Male, Pattern Recognition, Visual/physiology, Phonetics, Reading, Recognition (Psychology)/physiology, Time Factors, Treatment Outcome
Pubmed
Web of science
Création de la notice
24/03/2013 20:09
Dernière modification de la notice
20/08/2019 16:39
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