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Related Experiment Videos

Maturation of executive function in autism.

Beatriz Luna1, Sara K Doll, Stephen J Hegedus

  • 1Department of Psychiatry, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, USA. lunab@upmc.edu

Biological Psychiatry
|May 3, 2006
PubMed
Summary

Executive dysfunction in autism is present throughout development. While some functions develop typically, working memory shows atypical progression, suggesting targeted interventions may help enhance cognitive capacities.

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Area of Science:

  • Neurodevelopmental disorders
  • Cognitive neuroscience
  • Autism Spectrum Disorder (ASD) research

Background:

  • Executive dysfunction is a known characteristic of autism spectrum disorder (ASD) across various age groups.
  • The precise emergence and developmental trajectory of executive function impairments in ASD remain unclear.

Purpose of the Study:

  • To investigate the developmental emergence and progression of executive function deficits in autism.
  • To compare oculomotor executive functions between individuals with autism and typically developing controls across different ages.

Main Methods:

  • Assessed 61 participants with autism (AUT) and 61 typically developing controls (CON) matched for age, gender, and IQ.
  • Utilized oculomotor delayed response (ODR) and antisaccade (AS) tasks to evaluate executive functions.

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  • Included a visually-guided saccade (VGS) task to assess sensorimotor control.

    • Main Results:

    • Autism participants showed consistent impairments in response inhibition and spatial working memory across all tested ages.
    • Both groups exhibited similar developmental improvements in sensorimotor speed and voluntary response inhibition.
    • Autism group displayed impaired developmental progression in cognitive planning initiation and online information maintenance, indicating atypical working memory development.

    Conclusions:

    • Executive dysfunction is a persistent feature in autism throughout development, with both typical and atypical developmental patterns observed.
    • Evidence of plasticity suggests potential for interventions targeting specific developmental epochs to enhance cognitive abilities in individuals with autism.