Centre d'Information et de documentation du CRA Rhône-Alpes
CRA
Informations pratiques
-
Adresse
Centre d'information et de documentation
du CRA Rhône-Alpes
Centre Hospitalier le Vinatier
bât 211
95, Bd Pinel
69678 Bron CedexHoraires
Lundi au Vendredi
9h00-12h00 13h30-16h00Contact
Tél: +33(0)4 37 91 54 65
Mail
Fax: +33(0)4 37 91 54 37
-
Détail de l'auteur
Auteur Odette MEGNIN |
Documents disponibles écrits par cet auteur (1)
Faire une suggestion Affiner la recherche
udiovisual speech integration in autism spectrum disorders: ERP evidence for atypicalities in lexical-semantic processing / Odette MEGNIN in Autism Research, 5-1 (February 2012)
[article]
Titre : udiovisual speech integration in autism spectrum disorders: ERP evidence for atypicalities in lexical-semantic processing Type de document : Texte imprimé et/ou numérique Auteurs : Odette MEGNIN, Auteur ; Atlanta FLITTON, Auteur ; Catherine R. G. JONES, Auteur ; Michelle DE HAAN, Auteur ; Torsten BALDEWEG, Auteur ; Tony CHARMAN, Auteur Année de publication : 2012 Article en page(s) : p.39-48 Langues : Anglais (eng) Mots-clés : auditory ASD ERP language multisensory visual Index. décimale : PER Périodiques Résumé : In typically developing (TD) individuals, behavioral and event-related potential (ERP) studies suggest that audiovisual (AV) integration enables faster and more efficient processing of speech. However, little is known about AV speech processing in individuals with autism spectrum disorders (ASD). This study examined ERP responses to spoken words to elucidate the effects of visual speech (the lip movements accompanying a spoken word) on the range of auditory speech processing stages from sound onset detection to semantic integration. The study also included an AV condition, which paired spoken words with a dynamic scrambled face in order to highlight AV effects specific to visual speech. Fourteen adolescent boys with ASD (15–17 years old) and 14 age- and verbal IQ-matched TD boys participated. The ERP of the TD group showed a pattern and topography of AV interaction effects consistent with activity within the superior temporal plane, with two dissociable effects over frontocentral and centroparietal regions. The posterior effect (200–300?ms interval) was specifically sensitive to lip movements in TD boys, and no AV modulation was observed in this region for the ASD group. Moreover, the magnitude of the posterior AV effect to visual speech correlated inversely with ASD symptomatology. In addition, the ASD boys showed an unexpected effect (P2 time window) over the frontocentral region (pooled electrodes F3, Fz, F4, FC1, FC2, FC3, FC4), which was sensitive to scrambled face stimuli. These results suggest that the neural networks facilitating processing of spoken words by visual speech are altered in individuals with ASD. En ligne : http://dx.doi.org/10.1002/aur.231 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=153
in Autism Research > 5-1 (February 2012) . - p.39-48[article] udiovisual speech integration in autism spectrum disorders: ERP evidence for atypicalities in lexical-semantic processing [Texte imprimé et/ou numérique] / Odette MEGNIN, Auteur ; Atlanta FLITTON, Auteur ; Catherine R. G. JONES, Auteur ; Michelle DE HAAN, Auteur ; Torsten BALDEWEG, Auteur ; Tony CHARMAN, Auteur . - 2012 . - p.39-48.
Langues : Anglais (eng)
in Autism Research > 5-1 (February 2012) . - p.39-48
Mots-clés : auditory ASD ERP language multisensory visual Index. décimale : PER Périodiques Résumé : In typically developing (TD) individuals, behavioral and event-related potential (ERP) studies suggest that audiovisual (AV) integration enables faster and more efficient processing of speech. However, little is known about AV speech processing in individuals with autism spectrum disorders (ASD). This study examined ERP responses to spoken words to elucidate the effects of visual speech (the lip movements accompanying a spoken word) on the range of auditory speech processing stages from sound onset detection to semantic integration. The study also included an AV condition, which paired spoken words with a dynamic scrambled face in order to highlight AV effects specific to visual speech. Fourteen adolescent boys with ASD (15–17 years old) and 14 age- and verbal IQ-matched TD boys participated. The ERP of the TD group showed a pattern and topography of AV interaction effects consistent with activity within the superior temporal plane, with two dissociable effects over frontocentral and centroparietal regions. The posterior effect (200–300?ms interval) was specifically sensitive to lip movements in TD boys, and no AV modulation was observed in this region for the ASD group. Moreover, the magnitude of the posterior AV effect to visual speech correlated inversely with ASD symptomatology. In addition, the ASD boys showed an unexpected effect (P2 time window) over the frontocentral region (pooled electrodes F3, Fz, F4, FC1, FC2, FC3, FC4), which was sensitive to scrambled face stimuli. These results suggest that the neural networks facilitating processing of spoken words by visual speech are altered in individuals with ASD. En ligne : http://dx.doi.org/10.1002/aur.231 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=153