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Altered Dynamics of the fMRI Response to Faces in Individuals with Autism / Natalia M. KLEINHANS in Journal of Autism and Developmental Disorders, 46-1 (January 2016)
[article]
Titre : Altered Dynamics of the fMRI Response to Faces in Individuals with Autism Type de document : Texte imprimé et/ou numérique Auteurs : Natalia M. KLEINHANS, Auteur ; Todd RICHARDS, Auteur ; Jessica GREENSON, Auteur ; Geraldine DAWSON, Auteur ; Elizabeth H. AYLWARD, Auteur Année de publication : 2016 Article en page(s) : p.232-241 Langues : Anglais (eng) Mots-clés : Habituation Faces Houses Amygdala Fusiform Adaptation Index. décimale : PER Périodiques Résumé : Abnormal fMRI habituation in autism spectrum disorders (ASDs) has been proposed as a critical component in social impairment. This study investigated habituation to fearful faces and houses in ASD and whether fMRI measures of brain activity discriminate between ASD and typically developing (TD) controls. Two identical fMRI runs presenting masked fearful faces, houses, and scrambled images were collected. We found significantly slower fMRI responses to fearful faces but not houses in ASD. In addition, the pattern of slow to emerge amygdala activation to faces had robust discriminability [ASD vs. TD; area under the curve (AUC) = .852, p < .001]. In contrast, habituation to houses had no predictive value (AUC = .573, p = .365). Amygdala habituation to emotional faces may be useful for quantifying risk in ASD. En ligne : http://dx.doi.org/10.1007/s10803-015-2565-8 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=278
in Journal of Autism and Developmental Disorders > 46-1 (January 2016) . - p.232-241[article] Altered Dynamics of the fMRI Response to Faces in Individuals with Autism [Texte imprimé et/ou numérique] / Natalia M. KLEINHANS, Auteur ; Todd RICHARDS, Auteur ; Jessica GREENSON, Auteur ; Geraldine DAWSON, Auteur ; Elizabeth H. AYLWARD, Auteur . - 2016 . - p.232-241.
Langues : Anglais (eng)
in Journal of Autism and Developmental Disorders > 46-1 (January 2016) . - p.232-241
Mots-clés : Habituation Faces Houses Amygdala Fusiform Adaptation Index. décimale : PER Périodiques Résumé : Abnormal fMRI habituation in autism spectrum disorders (ASDs) has been proposed as a critical component in social impairment. This study investigated habituation to fearful faces and houses in ASD and whether fMRI measures of brain activity discriminate between ASD and typically developing (TD) controls. Two identical fMRI runs presenting masked fearful faces, houses, and scrambled images were collected. We found significantly slower fMRI responses to fearful faces but not houses in ASD. In addition, the pattern of slow to emerge amygdala activation to faces had robust discriminability [ASD vs. TD; area under the curve (AUC) = .852, p < .001]. In contrast, habituation to houses had no predictive value (AUC = .573, p = .365). Amygdala habituation to emotional faces may be useful for quantifying risk in ASD. En ligne : http://dx.doi.org/10.1007/s10803-015-2565-8 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=278