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01-06-2015 | Original Paper | Uitgave 6/2015

Journal of Autism and Developmental Disorders 6/2015

Fragile Spectral and Temporal Auditory Processing in Adolescents with Autism Spectrum Disorder and Early Language Delay

Tijdschrift:
Journal of Autism and Developmental Disorders > Uitgave 6/2015
Auteurs:
Bart Boets, Judith Verhoeven, Jan Wouters, Jean Steyaert
Belangrijke opmerkingen

Electronic supplementary material

The online version of this article (doi:10.​1007/​s10803-014-2341-1) contains supplementary material, which is available to authorized users.

Abstract

We investigated low-level auditory spectral and temporal processing in adolescents with autism spectrum disorder (ASD) and early language delay compared to matched typically developing controls. Auditory measures were designed to target right versus left auditory cortex processing (i.e. frequency discrimination and slow amplitude modulation (AM) detection versus gap-in-noise detection and faster AM detection), and to pinpoint the task and stimulus characteristics underlying putative superior spectral processing in ASD. We observed impaired frequency discrimination in the ASD group and suggestive evidence of poorer temporal resolution as indexed by gap-in-noise detection thresholds. These findings question the evidence of enhanced spectral sensitivity in ASD and do not support the hypothesis of superior right and inferior left hemispheric auditory processing in ASD.

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Extra materiaal
Supplementary material 1 (WAV 463 kb)
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Supplementary material 2 (WAV 462 kb)
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Supplementary material 16 (DOCX 12 kb)
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