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Contrasting the Effects of Task Difficulty and Perceptual Load on Auditory Detection Sensitivity in Individuals with Autism.

To test a central assumption of the increased perceptual capacity account in individuals with Autism Spectrum Disorder (ASD), the effects of perceptual load and target-stimulus degradation on auditory detection sensitivity were contrasted. Fourteen adolescents with ASD and 16 neurotypical controls p...

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Published in:Journal of Autism & Developmental Disorders Vol. 49; no. 2; pp. 762 - 773
Main Authors: Tillmann, Julian, Swettenham, John
Format: research tables/charts Journal Article
Published: Springer Nature Feb2019
Online Access:View this record in EBSCOhost
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      dt: Feb2019
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      pub: Springer Nature
      place: New York, New York
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        atl: Contrasting the Effects of Task Difficulty and Perceptual Load on Auditory Detection Sensitivity in Individuals with Autism.
      aug:
        au:
          Tillmann, Julian
          Swettenham, John
        affil: Department of Psychology, Institute of Psychiatry, Psychology & Neuroscience, King's College London, De Crespigny Park, Denmark Hill, SE5 8AF, London, UK
      sug:
        subj:
          Autism Spectrum Disorder
          Attention
          Visual Perception
          Task Performance and Analysis
          Auditory Perception
          Human
          Adolescence
          Psychomotor Performance
          Auditory Threshold
          Adolescent: 13-18 years
      ab: To test a central assumption of the increased perceptual capacity account in individuals with Autism Spectrum Disorder (ASD), the effects of perceptual load and target-stimulus degradation on auditory detection sensitivity were contrasted. Fourteen adolescents with ASD and 16 neurotypical controls performed a visual letter search task under three conditions: low perceptual load, high perceptual load and low perceptual load with a degraded target while simultaneously detecting an auditory tone in noise. For both participants with ASD and neurotypical controls, increasing perceptual load and target degradation increased task difficulty as indexed by reaction times and accuracy. However, only increasing perceptual load reduced subsequent auditory detection sensitivity. The study confirms that perceptual load, and not task difficulty, modulates selective attention in ASD.
      pubtype: Academic Journal
      doctype:
        research
        tables/charts
        Journal Article
      ougenre: Article
    language: English
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