Enhanced integration of motion information in children with autism

Catherine Manning*, Marc S. Tibber, Tony Charman, Steven C. Dakin, Elizabeth Pellicano

*Corresponding author for this work

Research output: Contribution to journalArticle

35 Citations (Scopus)
2 Downloads (Pure)

Abstract

To judge the overall direction of a shoal of fish or a crowd of people, observers must integrate motion signals across space and time. The limits on our ability to pool motion have largely been established using the motion coherence paradigm, in which observers report the direction of coherently moving dots amid randomly moving noise dots. Poor performance by autistic individuals on this task has widely been interpreted as evidence of disrupted integrative processes. Critically, however, motion coherence thresholds are not necessarily limited only by pooling. They could also be limited by imprecision in estimating the direction of individual elements or by difficulties segregating signal from noise. Here, 33 children with autism 6–13 years of age and 33 age- and ability-matched typical children performed a more robust task reporting mean dot direction both in the presence and the absence of directional variability alongside a standard motion coherence task. Children with autism were just as sensitive to directional differences as typical children when all elements moved in the same direction (no variability). However, remarkably, children with autism were more sensitive to the average direction in the presence of directional variability, providing the first evidence of enhanced motion integration in autism. Despite this improved averaging ability, children with autism performed comparably to typical children in the motion coherence task, suggesting that their motion coherence thresholds may be limited by reduced segregation of signal from noise. Although potentially advantageous under some conditions, increased integration may lead to feelings of “sensory overload” in children with autism.

Original languageEnglish
Pages (from-to)6979-6986
Number of pages8
JournalJournal of Neuroscience
Volume35
Issue number18
DOIs
Publication statusPublished - 6 May 2015
Externally publishedYes

Bibliographical note

Copyright the Author(s) 2015. Version archived for private and non-commercial use with the permission of the author/s and according to publisher conditions. For further rights please contact the publisher.

Keywords

  • autism
  • developmental disorders
  • motion perception

Fingerprint Dive into the research topics of 'Enhanced integration of motion information in children with autism'. Together they form a unique fingerprint.

  • Cite this