Enhanced access to early visual processing of perceptual simultaneity in autism spectrum disorders

Christine M. Falter, Sven Braeutigam, Roger Nathan, Sarah Carrington, Anthony J. Bailey

Research output: Contribution to journalArticle

Abstract

We compared judgements of the simultaneity or asynchrony of visual stimuli in individuals with autism spectrum disorders (ASD) and typically-developing controls using Magnetoencephalography (MEG). Two vertical bars were presented simultaneously or non-simultaneously with two different stimulus onset delays. Participants with ASD distinguished significantly better between real simultaneity (0 ms delay between two stimuli) and apparent simultaneity (17 ms delay between two stimuli) than controls. In line with the increased sensitivity, event-related MEG activity showed increased differential responses for simultaneity versus apparent simultaneity. The strongest evoked potentials, observed over occipital cortices at about 130 ms, were correlated with performance differences in the ASD group only. Superior access to early visual brain processes in ASD might underlie increased resolution of visual events in perception.

Original languageEnglish
Pages (from-to)1857-1866
Number of pages10
JournalJournal of Autism and Developmental Disorders
Volume43
Issue number8
Early online date14 Dec 2012
DOIs
Publication statusPublished - Aug 2013

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Magnetoencephalography
Occipital Lobe
Evoked Potentials
Autism Spectrum Disorder
Brain

Keywords

  • Asperger syndrome
  • event timing
  • high-functioning autism
  • magnetoencephalography
  • visual simultaneity

Cite this

Falter, Christine M. ; Braeutigam, Sven ; Nathan, Roger ; Carrington, Sarah ; Bailey, Anthony J. / Enhanced access to early visual processing of perceptual simultaneity in autism spectrum disorders. In: Journal of Autism and Developmental Disorders. 2013 ; Vol. 43, No. 8. pp. 1857-1866.
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Enhanced access to early visual processing of perceptual simultaneity in autism spectrum disorders. / Falter, Christine M.; Braeutigam, Sven; Nathan, Roger; Carrington, Sarah; Bailey, Anthony J.

In: Journal of Autism and Developmental Disorders, Vol. 43, No. 8, 08.2013, p. 1857-1866.

Research output: Contribution to journalArticle

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