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Updated: Jan 14, 2026
Comparing Eye-tracking Data of Children with High-functioning ASD, Comorbid ADHD, and of a Control Watching Social Videos
Published on: December 7, 2018
State-dependent changes in peak alpha frequency during visual engagement in children with and without autism spectrum
Masuhiko Sano1, Tetsu Hirosawa2, Daiki Soma1
1Department of Psychiatry and Neurobiology, Graduate School of Medical Science, Kanazawa University, Kanazawa, Japan.
Insights
Children with autism spectrum disorder (ASD) show different brain responses to visual stimuli compared to typically developing peers. This difference in peak alpha frequency (PAF) reactivity may impact social information processing in ASD.
Area of Science:
- Neuroscience
- Developmental Psychology
- Biomarkers
Background:
- Peak alpha frequency (PAF) is a key indicator of brain development and cognitive abilities.
- Understanding how the brain responds to sensory input is crucial for identifying neurodevelopmental differences.
Purpose of the Study:
- To investigate differences in PAF reactivity between children with autism spectrum disorder (ASD) and typically developing (TD) children.
- To compare brain responses in a resting state versus during a visually engaging task.
Main Methods:
- Magnetoencephalography (MEG) data were collected from 5-10 year old children (22 ASD, 29 TD).
- PAF was measured in a dark-room (DR) resting state and an eyes-open (EO) condition with silent video viewing.
- Linear mixed-effects models analyzed the impact of diagnosis and condition on PAF.
Main Results:
- A significant interaction between diagnosis and condition was found in the right temporal region.
- TD children exhibited higher PAF in the EO condition compared to DR, while ASD children did not.
- In TD children, reduced PAF reactivity correlated with lower social responsiveness.
Conclusions:
- Atypical PAF modulation in response to visual stimuli may underlie altered social information processing in ASD.
- PAF reactivity patterns could serve as potential biomarkers for ASD.
- These findings highlight differences in neural mechanisms related to sensory processing and social functioning in ASD.
Abstract:
Peak alpha frequency (PAF) is a neurophysiological marker of cortical maturation and cognitive function. We aimed to examine PAF reactivity to a visually engaging eyes-open (EO) condition, during which children watched a muted preferred video, compared to a dark-room (DR) resting state without sound, in children with ASD and their TD peers. We analyzed magnetoencephalography data from 68 cortical sources in children aged 5-10 (ASD: n=22; TD: n=29), calculating PAF during a resting-state DR condition and an EO condition involving silent video viewing. Linear mixed-effects models were used to assess the effects of diagnosis, condition, and their interaction on PAF, controlling for age and sex. The results indicated a significant interaction between diagnosis and condition in the right temporal region, where TD children consistently showed a higher PAF in the EO condition relative to the DR condition, whereas children with ASD did not. Furthermore, in TD children, greater PAF reduction in the right temporal region correlated with lower social responsiveness scores, suggesting a link between PAF reactivity and social functioning. These findings suggest that atypical PAF modulation in response to sensory input may reflect altered neural mechanisms underlying social information processing in ASD. Understanding PAF reactivity patterns can inform the development of ASD biomarkers.
