Reduced Gaze-Stimulus Synchrony to a Rhythmic Children's Song in Young Children With Autism: A Recurrence...

Area of Science:

• Developmental Psychology
• Neurodevelopmental Disorders
• Eye-Tracking Research

Background:

• Autism Spectrum Disorder (ASD) is a neurodevelopmental condition characterized by social communication challenges.
• Understanding early visual attention patterns is crucial for identifying developmental trajectories in ASD.
• Gaze-stimulus synchrony, the alignment of eye movements with external events, is a key aspect of visual engagement.

Purpose of the Study:

• To investigate gaze behavior, specifically gaze-stimulus synchrony, in young children with ASD.
• To explore the relationship between gaze patterns and developmental levels in children with ASD.
• To compare visual engagement in children with ASD, global developmental delay (GDD), and typical development (TD).

Main Methods:

• Eye-tracking data collected from 52 children with ASD, 58 with GDD, and 55 TD children (18-48 months).
• Participants viewed a video of a girl clapping and moving to music.
• Area of Interest (AOI) analysis assessed visual fixation, and Recurrence Quantification Analysis (RQA) measured gaze-stimulus synchrony.

Main Results:

• Children with ASD showed significantly less visual fixation on the face and mouth-nose regions compared to TD children.
• The ASD group exhibited significantly lower gaze-stimulus synchrony, as indicated by RQA measures.
• Both AOI and RQA measures were significantly correlated with developmental levels in children with ASD.

Conclusions:

• Young children with ASD demonstrate reduced visual engagement and gaze-stimulus synchrony compared to TD peers.
• Gaze-based metrics, including those derived from RQA, show promise as objective markers for developmental functioning in ASD.
• Further research with varied stimuli is needed to understand the domain-generalizability of atypical visual processing in ASD.