Saccadic Eye Movements in Adults with High-Functioning Autism Spectrum Disorder

SAGE Publications. 2455 Teller Road, Thousand Oaks, CA 91320. Tel: 800-818-7243; Tel: 805-499-9774; Fax: 800-583-2665; e-mail: [email protected]; Web site: http://sagepub.com

Y

10

Eye Movements; Adults; Pervasive Developmental Disorders; Autism; Severe Disabilities; Control Groups; Experimental Groups; Comparative Analysis; Accuracy; Visual Aids; Perceptual Motor Learning; Computer Assisted Testing; Correlation; Spatial Ability; Foreign Countries; Intelligence Tests; Statistical Analysis

10.1177/1362361316667057

1362-3613

In this study, we examined the accuracy and dynamics of visually guided saccades in 20 adults with autism spectrum disorder, as compared to 20 typically developed adults using the Step/Overlap/Gap paradigms. Performances in participants with autistic spectrum disorder were characterized by preserved Gap/Overlap effect, but reduced gain and peak velocity, as well as a greater trial-to-trial variability in task performance, as compared to the control group. While visual orienting and attentional engagement were relatively preserved in individuals with autistic spectrum disorder, overall these findings provide evidence that abnormal oculomotor behavior in autistic spectrum disorder reflects an altered sensorimotor control due to cerebellar abnormalities, rather than a deficit in the volitional control of eye movements. This study contributes to a growing body of evidence implicating this structure in the physiopathology of autism.

As Provided

58

2018

EJ1171378