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Updated: Jun 11, 2025
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Eye Tracking Young Children with Autism
Published on: March 27, 2012
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Idiosyncratic pupil regulation in autistic children
Isabel H Bleimeister1,2, Inbar Avni2,3,4, Michael C Granovetter4
1Psychology Department, Ben Gurion University of the Negev, Beer Sheva, Israel.
Summary
Children with autism show more variable pupil responses than typically developing children. This pupillometry measure reveals differences in neural activity regulation in autism.
Area of Science:
- Neuroscience
- Developmental Psychology
- Autism Research
Background:
- Autism spectrum disorder (ASD) is characterized by differences in neural processing.
- Previous studies show atypical brain responses and eye movements in autistic children.
- Pupillometry offers a novel, non-invasive method to investigate neural regulation in ASD.
Purpose of the Study:
- To investigate pupillary response variability in young children with and without autism.
- To determine if pupillometry can capture idiosyncratic neural activity in autism.
- To assess the utility of pupillometry for studying autism in young children, including those with intellectual disability.
Main Methods:
- Pupillometry recordings were collected from 111 children (74 with autism) aged ~4.5 years.
- Children watched three 90-second movies, and pupillary time-courses were analyzed.
- Inter-subject correlations of pupillary responses were computed within and between groups (autistic vs. typically developing).
Main Results:
- Children with autism exhibited significantly weaker inter-subject pupillary response correlations compared to typically developing children.
- These findings were independent of gaze inter-subject correlations.
- The largest differences were observed in response to a movie depicting social interaction.
Conclusions:
- Pupillometry effectively measures idiosyncrasy in pupil regulation, even in young children with autism and intellectual disability.
- Autistic children demonstrate less stable, more idiosyncratic pupil regulation, suggesting more variable neural activity.
- Pupillometry is a valuable tool for understanding neural regulation differences in autism spectrum disorder.
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