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Abstract
Background
Dysmetria in children with autism spectrum disorders is considered depend on executive dysfunctions. To explore the impact of inhibitory control and working memory on oculomotor performance in children with autism spectrum disorder (ASD), we used the memory guided saccade (MGS) paradigm.
Method
We enrolled in our study a group of 26 children with ASD and in a group of 26 children age-, sex-, and IQ-matched of with typically development, using only one single delay period and one single stimulus amplitude. We recorded with a video eye-tracker system- the latency and the accuracy of the MGS as well as the number of anticipatory saccades during the MGS paradigm.
Results
Children with ASD displayed significant increased latency (p < .01), decreased amplitude of memory guided saccades (p < .01) and an elevated number of anticipatory saccades (p < .003), when compared to age-, sex-, IQ- matched children with typical development.
Conclusion
These abnormalities may underline the executive dysfunctions frequently reported in ASD: the increased latency and the decreased amplitude of memory guides saccades may be related to planning and working memory impairments; the increased number of anticipatory saccades may be linked to a deficit in inhibitory control.
Acknowledgements
The authors thank the children who participated in the study. Authors also thank the practitioners from the Child and Adolescent Psychiatry Department (Robert Debré Hospital).
Disclosure statement
The authors have no financial and personal relationships with other people or organizations that could inappropriately influence or bias their work in this study.
Authors’ contributions
Conceptualization: SC, MPB
Selection of patients: EH, RD
Measure & data analysis: SC, MPB
Writing original draft: SC
Review & editing: SC, EH, RD, MPB