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Eye Tracking Young Children with Autism
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Eye Tracking Young Children with Autism

Published on: March 27, 2012

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Neural Basis of Visual Attentional Orienting in Childhood Autism Spectrum Disorders

Eric R Murphy1, Megan Norr2, John F Strang3

  • 1Department of Psychiatry, Washington University in St. Louis, 4444 Forest Park Parkway, Suite 2100, St Louis, MO, 63108, USA. murphye@psychiatry.wustl.edu.

Journal of Autism and Developmental Disorders
|October 4, 2016
PubMed

Insights

Children with Autism Spectrum Disorder (ASD) show similar attention bias to visual cues but altered brain activity, suggesting hypersensitivity to visual salience. This brain activity links to restricted behaviors in ASD.

Area of Science:

  • Neuroscience
  • Developmental Psychology
  • Autism Spectrum Disorder Research

Background:

  • Autism Spectrum Disorder (ASD) is characterized by social and communication challenges, alongside restricted and repetitive behaviors.
  • Visual processing atypicalities are increasingly recognized as a core feature of ASD, potentially impacting attention.
  • Understanding attention orienting to basic visual properties is crucial for deciphering ASD-related cognitive differences.

Purpose of the Study:

  • To investigate spontaneous attention orienting to visual salience in children with ASD compared to neurotypical controls.
  • To explore the neural correlates of visual attention processing in ASD using functional magnetic resonance imaging (fMRI).
  • To examine the relationship between brain activation patterns and behavioral symptoms in ASD.

Main Methods:

  • A modified Dot-Probe task was employed to assess attentional bias towards visually salient stimuli.
  • Functional magnetic resonance imaging (fMRI) was used to measure brain activity during the task.
  • Participants included high-functioning preadolescent children with ASD and age- and IQ-matched typically developing controls.

Main Results:

  • Attentional bias magnitude to visually salient stimuli was comparable between children with ASD and controls.
  • Children with ASD exhibited differential activation in frontal and temporoparietal regions, suggesting hypersensitivity to visual salience or sameness.
  • Activation in specific brain regions correlated with the severity of restricted and repetitive behavior symptoms in ASD.

Conclusions:

  • Despite similar behavioral attentional bias, children with ASD display distinct neural responses to visual salience.
  • Hypersensitivity to visual properties may underlie attentional orienting difficulties observed in Autism Spectrum Disorder.
  • These findings highlight the role of visual processing atypicalities in the broader cognitive profile of ASD.

Keywords:
Attention orientingAutism spectrum disorderRestricted and repetitive behaviorVisual saliencefMRI

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