Motor difficulties are associated with impaired perception of interactive human movement in autism spectrum disorder: A pilot study

Ebony R Lindor; Jeroen J A van Boxtel; Nicole J Rinehart; Joanne Fielding

doi:10.1080/13803395.2019.1634181

Motor difficulties are associated with impaired perception of interactive human movement in autism spectrum disorder: A pilot study

J Clin Exp Neuropsychol. 2019 Oct;41(8):856-874. doi: 10.1080/13803395.2019.1634181. Epub 2019 Jun 26.

Authors

Ebony R Lindor^{1

2}, Jeroen J A van Boxtel^{1

3}, Nicole J Rinehart^{1

2}, Joanne Fielding^{1

4}

Affiliations

¹ a School of Psychological Sciences and Monash Institute of Cognitive and Clinical Neurosciences, Monash University , Victoria , Australia.
² b Deakin Child Study Centre, School of Psychology, Faculty of Health, Deakin University Geelong , Victoria , Australia.
³ c School of Psychology, Faculty of Health, University of Canberra , Canberra , Australia.
⁴ d Department of Neuroscience, Central Clinical School, Monash University , Melbourne , Australia.

PMID: 31242802
DOI: 10.1080/13803395.2019.1634181

Abstract

Introduction: The ability to accurately perceive human movement is fundamental to social functioning and known to be influenced by one's own motor skills. In Autism Spectrum Disorder (ASD), there is ongoing debate about whether human movement perception is impaired. Given that motor skills vary considerably among these individuals, it may be that human movement perception is differentially affected as a function of motor proficiency. The aim of the current study was, thus, to explore whether individuals with ASD with and without motor difficulties differ in the way they visually attend to and perceive human movement. Method: Three groups of children aged 6 to 14 completed the study: an ASD group with motor difficulties (ASD_MD), an ASD group without motor difficulties (ASD_NMD), and a typically-developing control group (TD). All participants (N = 31) underwent eye-tracking while they viewed communicative interactions performed by two point-light actors. Primary analyses considered group differences in perceptual accuracy and gaze patterns. Results: Results revealed poorer perceptual accuracy in the ASD_MD group compared to the ASD_NMD and TD groups. Both ASD groups also exhibited gaze anomalies. Unlike the ASD_NMD and TD groups who preferentially allocated their gaze to the actor initiating the interaction, the ASD_MD group gazed at both actors equally. In contrast, the ASD_NMD group shifted their gaze between the actors more frequently than the other groups. Conclusions: These preliminary findings suggest that individuals with ASD and co-occurring motor difficulties employ an atypical attentional style that may hinder accurate human movement perception, whereas those without motor difficulties may employ a compensatory attentional style that facilitates typical perception. Improving our understanding of how attention and perception are affected across the ASD spectrum has the potential to provide insight into the mechanisms that underlie the core social deficits that define this disorder.

Keywords: Autism; attention; biological motion; human movement perception; motor skills.

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

Adolescent
Autism Spectrum Disorder / diagnosis*
Autism Spectrum Disorder / psychology
Child
Comprehension
Female
Fixation, Ocular
Humans
Interpersonal Relations*
Male
Motion Perception*
Perceptual Disorders / diagnosis*
Perceptual Disorders / psychology
Pilot Projects
Psychomotor Disorders / diagnosis*
Psychomotor Disorders / psychology
Social Perception*