Adaptation to the Speed of Biological Motion in Autism

Themis Karaminis*, Roberto Arrighi, Georgia Forth, David Burr, Elizabeth Pellicano

*Corresponding author for this work

Research output: Contribution to journalArticle (journal)peer-review

7 Citations (Scopus)
12 Downloads (Pure)

Abstract

Autistic individuals often present atypicalities in adaptation—the continuous recalibration of perceptual systems driven by recent sensory experiences. Here, we examined such atypicalities in human biological motion. We used a dual-task paradigm, including a running-speed discrimination task (‘comparing the speed of two running silhouettes’) and a change-detection task (‘detecting fixation-point shrinkages’) assessing attention. We tested 19 school-age autistic and 19 age- and ability-matched typical participants, also recording eye-movements. The two groups presented comparable speed-discrimination abilities and, unexpectedly, comparable adaptation. Accuracy in the change-detection task and the scatter of eye-fixations around the fixation point were also similar across groups. Yet, the scatter of fixations reliably predicted the magnitude of adaptation, demonstrating the importance of controlling for attention in adaptation studies.

Original languageEnglish
Pages (from-to)373-385
Number of pages13
JournalJournal of Autism and Developmental Disorders
Volume50
Issue number2
Early online date19 Oct 2019
DOIs
Publication statusPublished - 1 Feb 2020

Keywords

  • Adaptation
  • Autism
  • Biological motion
  • Perception
  • Running speed

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