[article] 
inAutism Research > 18-1 (January 2025) . - p.56-69

Titre :	Increased alpha power in autistic adults: Relation to sensory behaviors and cortical volume : Autism Research
Type de document :	Texte imprimé et/ou numérique
Auteurs :	Scott O. MURRAY, Auteur ; Daniela L. Seczon, Auteur ; Mark Pettet, Auteur ; Hannah M. REA, Auteur ; Kristin M. WOODARD, Auteur ; Tamar KOLODNY, Auteur ; Sara Jane WEBB, Auteur
Article en page(s) :	p.56-69
Langues :	Anglais (eng)
Mots-clés :	alpha  autism spectrum disorder  EEG  sensory processing  vision
Index. décimale :	PER Périodiques
Résumé :	Abstract Alpha-band (~10?Hz) neural oscillations, crucial for gating sensory information, may offer insights into the atypical sensory experiences characteristic of autism spectrum disorder (ASD). We investigated alpha-band EEG activity in autistic adults (n?=?29) compared with a nonautistic group (n?=?23) under various stimulus-driven and resting-state conditions. The autistic group showed consistently higher alpha amplitude across all time points. In addition, there was proportionally more suppression of alpha at stimulus onset in the autistic group, and alpha amplitude in this stimulus-onset period correlated with sensory behaviors. Recent research suggests a link between subcortical structures' volume and cortical alpha magnitude. Prompted by this, we explored the association between alpha power and the volume of subcortical structures and total cortical volume in ASD. Our findings indicate a significant correlation with total cortical volume and a group by hippocampal volume interaction, pointing to the potential role of anatomical structural characteristics as potential modulators of cortical alpha oscillations in ASD. Overall, the results highlight altered alpha in autistic individuals as potentially contributing to the heightened sensory symptoms in autistic compared with nonautistic adults.
En ligne :	https://doi.org/10.1002/aur.3266
Permalink :	https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=546

[article] Increased alpha power in autistic adults: Relation to sensory behaviors and cortical volume : Autism Research [Texte imprimé et/ou numérique] / Scott O. MURRAY, Auteur ; Daniela L. Seczon, Auteur ; Mark Pettet, Auteur ; Hannah M. REA, Auteur ; Kristin M. WOODARD, Auteur ; Tamar KOLODNY, Auteur ; Sara Jane WEBB, Auteur . - p.56-69.
Langues : Anglais (eng)
in Autism Research > 18-1 (January 2025) . - p.56-69

Mots-clés :	alpha  autism spectrum disorder  EEG  sensory processing  vision
Index. décimale :	PER Périodiques
Résumé :	Abstract Alpha-band (~10?Hz) neural oscillations, crucial for gating sensory information, may offer insights into the atypical sensory experiences characteristic of autism spectrum disorder (ASD). We investigated alpha-band EEG activity in autistic adults (n?=?29) compared with a nonautistic group (n?=?23) under various stimulus-driven and resting-state conditions. The autistic group showed consistently higher alpha amplitude across all time points. In addition, there was proportionally more suppression of alpha at stimulus onset in the autistic group, and alpha amplitude in this stimulus-onset period correlated with sensory behaviors. Recent research suggests a link between subcortical structures' volume and cortical alpha magnitude. Prompted by this, we explored the association between alpha power and the volume of subcortical structures and total cortical volume in ASD. Our findings indicate a significant correlation with total cortical volume and a group by hippocampal volume interaction, pointing to the potential role of anatomical structural characteristics as potential modulators of cortical alpha oscillations in ASD. Overall, the results highlight altered alpha in autistic individuals as potentially contributing to the heightened sensory symptoms in autistic compared with nonautistic adults.
En ligne :	https://doi.org/10.1002/aur.3266
Permalink :	https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=546