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Spatial Contrast Sensitivity in Adolescents with Autism Spectrum Disorders / Hwan CUI KOH in Journal of Autism and Developmental Disorders, 40-8 (August 2010)

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[article]
inJournal of Autism and Developmental Disorders > 40-8 (August 2010) . - p.978-987

Titre :

Spatial Contrast Sensitivity in Adolescents with Autism Spectrum Disorders

Type de document :

texte imprimé

Auteurs :

Hwan CUI KOH, Auteur ; Elizabeth MILNE, Auteur ; Karen R. DOBKINS, Auteur

Année de publication :

2010

Article en page(s) :

p.978-987

Langues :

Anglais (eng)

Mots-clés :

Autism-spectrum-disorders Spatial-frequency Contrast-sensitivity Visual-acuity Perception Visual-psychophysics

Index. décimale :

PER Périodiques

Résumé :

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.

En ligne :

http://dx.doi.org/10.1007/s10803-010-0953-7

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