Peer-Reviewed Journal Details
Mandatory Fields
Tyndall, I,Ragless, L,O'Hora, D
2018
April
Consciousness And Cognition
Effects of perceptual load and socially meaningful stimuli on crossmodal selective attention in Autism Spectrum Disorder and neurotypical samples
Published
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Optional Fields
Autism Spectrum Disorder Selective attention Inattentional deafness Perceptual load Load theory Crossmodal attention VISUAL-SEARCH INATTENTIONAL BLINDNESS INDIVIDUALS IRRELEVANT CHILDREN ADULTS TASK CUES INHIBITION RESPONSES
60
25
36
The present study examined whether increasing visual perceptual load differentially affected both Socially Meaningful and Non-socially Meaningful auditory stimulus awareness in neurotypical (NT, n = 59) adults and Autism Spectrum Disorder (ASD, n = 57) adults. On a target trial, an unexpected critical auditory stimulus (CAS), either a Non-socially Meaningful (`beep' sound) or Socially Meaningful (`hi') stimulus, was played concurrently with the presentation of the visual task. Under conditions of low visual perceptual load both NT and ASD samples reliably noticed the CAS at similar rates (77-81%), whether the CAS was Socially Meaningful or Non-socially Meaningful. However, during high visual perceptual load NT and ASD participants reliably noticed the meaningful CAS (NT = 71%, ASD = 67%), but NT participants were unlikely to notice the Non-meaningful CAS (20%), whereas ASD participants reliably noticed it (80%), suggesting an inability to engage selective attention to ignore non-salient irrelevant distractor stimuli in ASD.
10.1016/j.concog.2018.02.006
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