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Spatial contrast sensitivity in adolescents with autism spectrum disorders

Koh, H.C., Milne, E. and Dobkins, K. (2010) Spatial contrast sensitivity in adolescents with autism spectrum disorders. Journal of Autism and Developmental Disorders, 40 (8). pp. 978-987. ISSN 0162-3257

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Adolescents with autism spectrum disorders (ASD) and typically developing (TD) controls underwent a rigorous psychophysical assessment that measured contrast sensitivity to seven spatial frequencies (0.5-20 cycles/degree). A contrast sensitivity function (CSF) was then fitted for each participant, from which four measures were obtained: visual acuity, peak spatial frequency, peak contrast sensitivity, and contrast sensitivity at a low spatial frequency. There were no group differences on any of the four CSF measures, indicating no differential spatial frequency processing in ASD. Although it has been suggested that detail-oriented visual perception in individuals with ASD may be a result of differential sensitivities to low versus high spatial frequencies, the current study finds no evidence to support this hypothesis.

Item Type: Article
Copyright, Publisher and Additional Information: © 2010 Springer. This is an author produced version of a paper subsequently published in Journal of Autism and Developmental Disorders. Uploaded in accordance with the publisher's self-archiving policy.
Keywords: Autism spectrum disorders; Spatial frequency; Contrast sensitivity; Visual acuity; Perception; Visual psychophysics
Institution: The University of Sheffield
Academic Units: The University of Sheffield > Faculty of Science (Sheffield) > Department of Psychology (Sheffield)
Depositing User: Miss Anthea Tucker
Date Deposited: 19 Aug 2010 12:08
Last Modified: 08 Feb 2013 17:01
Published Version: http://dx.doi.org/10.1007/s10803-010-0953-7
Status: Published
Publisher: Springer
Refereed: Yes
Identification Number: 10.1007/s10803-010-0953-7
URI: http://eprints.whiterose.ac.uk/id/eprint/11135

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