A late-emerging auditory deficit in autism

Mayalen Erviti, Catherine Semal, Beverly A. Wright, Anouck Amestoy, Manuel P. Bouvard, Laurent Demany*

*Corresponding author for this work

Research output: Contribution to journalArticle

4 Scopus citations

Abstract

Objective: Individuals with autism spectrum disorders (ASD) show enhanced perceptual and memory abilities in the domain of pitch, but also perceptual deficits in other auditory domains. The present study investigated their skills with respect to "echoic memory," a form of short-term sensory memory intimately tied to auditory perception, using a developmental perspective. Method: We tested 23 high-functioning participants with ASD and 26 typically developing (TD) participants, distributed in two age groups (children vs. young adults; mean ages: ~11 and ~21 years). By means of an adaptive psychophysical procedure, we measured the longest period for which periodic (i.e., repeated) noise could be reliably discriminated from nonperiodic (i.e., plain random) noise. On each experimental trial, a single noise sample was presented to the participant, who had to classify this sound as periodic or nonperiodic. Results: The TD adults performed, on average, much better than the other three groups, who performed similarly overall. As a function of practice, the measured thresholds improved for the TD participants, but did not change for the ASD participants. Thresholds were not correlated to performance in a test assessing verbal memory. The variance of the participants' response biases was larger among the ASD participants than among the TD participants. Conclusion: The results mainly suggest that echoic memory takes a long time to fully develop in TD humans, and that this development stops prematurely in persons with ASD.

Original languageEnglish (US)
Pages (from-to)454-462
Number of pages9
JournalNeuropsychology
Volume29
Issue number3
DOIs
StatePublished - May 1 2015

Keywords

  • Auditory development
  • Autism spectrum disorder
  • Echoic memory
  • Periodicity detection

ASJC Scopus subject areas

  • Neuropsychology and Physiological Psychology

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    Erviti, M., Semal, C., Wright, B. A., Amestoy, A., Bouvard, M. P., & Demany, L. (2015). A late-emerging auditory deficit in autism. Neuropsychology, 29(3), 454-462. https://doi.org/10.1037/neu0000162