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Consciousness reflected in the eyes.

Woon Ju Park1,2,3, Kimberly B Schauder1,3, Duje Tadin1,2,4

  • 1Center for Visual Science, University of Rochester, Rochester, United States.

Elife
|March 7, 2018
PubMed
Summary

Individuals with more autistic traits show greater pupil size changes when viewing optical illusions. This suggests a link between autistic traits and visual processing differences.

Keywords:
autismconsciousnesshumanneuroscienceoptical illusionspupil sizepupillometryvisual processing

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Area of Science:

  • Neuroscience
  • Psychology
  • Autism Research

Background:

  • Autistic traits are associated with differences in sensory processing.
  • Pupil size fluctuations can reflect cognitive and perceptual processing.
  • Optical illusions provide a tool to study visual perception.

Purpose of the Study:

  • To investigate the relationship between autistic traits and pupillary responses to optical illusions.
  • To explore how variations in visual perception are linked to autistic characteristics.

Main Methods:

  • Participants completed measures of autistic traits.
  • Pupil size was monitored using eye-tracking technology.
  • Participants viewed various optical illusions.

Main Results:

  • Higher levels of autistic traits correlated with significantly larger pupil size fluctuations.
  • The magnitude of pupillary response varied depending on the type of optical illusion presented.

Conclusions:

  • Pupillometry may serve as a potential objective measure for assessing visual processing differences in individuals with autistic traits.
  • These findings contribute to understanding the neurobiological underpinnings of sensory processing variations in autism spectrum disorder.