Auditory Stream Segregation in Autism Spectrum Disorder: Benefits and Downsides of Superior Perceptual Processes
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Auditory stream segregation allows us to organize our sound environment, by focusing on specific information and ignoring what is unimportant. One previous study reported difficulty in stream segregation ability in children with Asperger syndrome. In order to investigate this question further, we used an interleaved melody recognition task with children in the autism spectrum disorder (ASD). In this task, a probe melody is followed by a mixed sequence, made up of a target melody interleaved with a distractor melody. These two melodies have either the same [0 semitone (ST)] or a different mean frequency (6, 12 or 24 ST separation conditions). Children have to identify if the probe melody is present in the mixed sequence. Children with ASD performed better than typical children when melodies were completely embedded. Conversely, they were impaired in the ST separation conditions. Our results confirm the difficulty of children with ASD in using a frequency cue to organize auditory perceptual information. However, superior performance in the completely embedded condition may result from superior perceptual processes in autism. We propose that this atypical pattern of results might reflect the expression of a single cognitive feature in autism.
KeywordsAutism Audition Stream segregation Perception
We thank Dr. Brigitte Assouline and Dr. Stéphane Cabrol for the recruitment of ASD individuals, Aurélie Bock for data collection. We also thank the participants and their family for their time and commitment.
- Alcántara, J. I., Weisblatt, E. J. L., Moore, B. C. J., & Bolton, P. F. (2004). Speech-in-noise perception in high-functioning individuals with autism or Asperger’s syndrome. Journal of Child Psychology and Psychiatry and Allied Disciplines, 45(6), 1107–1114. doi:10.1111/j.1469-7610.2004.t01-1-00303.x.CrossRefGoogle Scholar
- APA. (2000). Diagnostic and statistical manual of mental disorders, fourth edition, text revision. Washington: American Psychiatric Association.Google Scholar
- Bhatara, A., Babikian, T., Laugeson, E., Tachdjian, R., & Sininger, Y. (2013). Impaired timing and frequency discrimination in high-functioning autism spectrum disorders. Journal of Autism and Developmental Disorders, 1–17. doi: 10.1007/s10803-013-1778-y.
- Bregman, A. (1990). Auditory scene analysis: The perceptual organization of sound. Cambridge: The MIT Press.Google Scholar
- Laffaiteur, J. P., Casali, M., Gualbert, J. M., & Madeline, C. (2001). Étude comparative du WISC-III et du K. ABC. Psychologie & Education, 46, 115–131.Google Scholar
- Lord, C., Risi, S., Lambrecht, L., Cook, E. H., Leventhal, B. L., Dilavore, P. C., et al. (2000). The autism diagnostic observation schedule-generic: A standard measure of social and communication deficits associated with the spectrum of autism. Heidelberg, Germany: Springer.Google Scholar
- Macmillan, N. A., & Creelman, C. D. (1991). Detection theory: A user’s guide. London: Lawrence Erlbaum Associates.Google Scholar