[article] 
inJournal of Autism and Developmental Disorders > 42-6 (June 2012) . - p.1011-1024

Titre :	Valence Scaling of Dynamic Facial Expressions is Altered in High-Functioning Subjects with Autism Spectrum Disorders: an fMRI Study
Type de document :	Texte imprimé et/ou numérique
Auteurs :	Jukka S. RAHKO, Auteur ; Jyri-Johan PAAKKI, Auteur ; Tuomo H. STARCK, Auteur ; Juha NIKKINEN, Auteur ; David L. PAULS, Auteur ; Jari V. KATSYRI, Auteur ; Eira JANSSON-VERKASALO, Auteur ; Alice S. CARTER, Auteur ; Tuula HURTIG, Auteur ; Marja-Leena MATTILA, Auteur ; Katja JUSSILA, Auteur ; Jukka J. REMES, Auteur ; Sanna KUUSIKKO-GAUFFIN, Auteur ; Mikko E. SAMS, Auteur ; Sven BÖLTE, Auteur ; Hanna EBELING, Auteur ; Irma MOILANEN, Auteur ; Osmo TERVONEN, Auteur ; Vesa KIVINIEMI, Auteur
Année de publication :	2012
Article en page(s) :	p.1011-1024
Langues :	Anglais (eng)
Mots-clés :	Autism spectrum disorders  Emotional facial expressions  Face processing  Functional MRI  Mirror neuron system  Valence
Index. décimale :	PER Périodiques
Résumé :	FMRI was performed with the dynamic facial expressions fear and happiness. This was done to detect differences in valence processing between 25 subjects with autism spectrum disorders (ASDs) and 27 typically developing controls. Valence scaling was abnormal in ASDs. Positive valence induces lower deactivation and abnormally strong activity in ASD in multiple regions. Negative valence increased deactivation in visual areas in subjects with ASDs. The most marked differences between valences focus on fronto-insular and temporal regions. This supports the idea that subjects with ASDs may have difficulty in passive processing of the salience and mirroring of expressions. When the valence scaling of brain activity fails, in contrast to controls, these areas activate and/or deactivate inappropriately during facial stimuli presented dynamically.
En ligne :	http://dx.doi.org/10.1007/s10803-011-1332-8
Permalink :	https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=156

[article] Valence Scaling of Dynamic Facial Expressions is Altered in High-Functioning Subjects with Autism Spectrum Disorders: an fMRI Study [Texte imprimé et/ou numérique] / Jukka S. RAHKO, Auteur ; Jyri-Johan PAAKKI, Auteur ; Tuomo H. STARCK, Auteur ; Juha NIKKINEN, Auteur ; David L. PAULS, Auteur ; Jari V. KATSYRI, Auteur ; Eira JANSSON-VERKASALO, Auteur ; Alice S. CARTER, Auteur ; Tuula HURTIG, Auteur ; Marja-Leena MATTILA, Auteur ; Katja JUSSILA, Auteur ; Jukka J. REMES, Auteur ; Sanna KUUSIKKO-GAUFFIN, Auteur ; Mikko E. SAMS, Auteur ; Sven BÖLTE, Auteur ; Hanna EBELING, Auteur ; Irma MOILANEN, Auteur ; Osmo TERVONEN, Auteur ; Vesa KIVINIEMI, Auteur . - 2012 . - p.1011-1024.
Langues : Anglais (eng)
in Journal of Autism and Developmental Disorders > 42-6 (June 2012) . - p.1011-1024

Mots-clés :	Autism spectrum disorders  Emotional facial expressions  Face processing  Functional MRI  Mirror neuron system  Valence
Index. décimale :	PER Périodiques
Résumé :	FMRI was performed with the dynamic facial expressions fear and happiness. This was done to detect differences in valence processing between 25 subjects with autism spectrum disorders (ASDs) and 27 typically developing controls. Valence scaling was abnormal in ASDs. Positive valence induces lower deactivation and abnormally strong activity in ASD in multiple regions. Negative valence increased deactivation in visual areas in subjects with ASDs. The most marked differences between valences focus on fronto-insular and temporal regions. This supports the idea that subjects with ASDs may have difficulty in passive processing of the salience and mirroring of expressions. When the valence scaling of brain activity fails, in contrast to controls, these areas activate and/or deactivate inappropriately during facial stimuli presented dynamically.
En ligne :	http://dx.doi.org/10.1007/s10803-011-1332-8
Permalink :	https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=156