Atypical visual-auditory predictive coding in autism spectrum disorder: Electrophysiological evidence from stimulus omissions.

Autism : the International Journal of Research and Practice
Thijs van LaarhovenJean Vroomen

Abstract

Many autistic individuals experience difficulties in processing sensory information (e.g. increased sensitivity to sound). Here we show that these difficulties may be related to an inability to process unexpected sensory stimulation. In this study, 29 older adolescents and young adults with autism and 29 age-matched individuals with typical development participated in an electroencephalography study. The electroencephalography study measured the participants' brain activity during unexpected silences in a sequence of videos of a handclap. The results showed that the brain activity of autistic individuals during these silences was increased compared to individuals with typical development. This increased activity indicates that autistic individuals may have difficulties in processing unexpected incoming sensory information, and might explain why autistic individuals are often overwhelmed by sensory stimulation. Our findings contribute to a better understanding of the neural mechanisms underlying the different sensory perception experienced by autistic individuals.

References

Aug 23, 2011·Journal of Autism and Developmental Disorders·Megan NorrisMichael C Edwards
Apr 5, 2013·Journal of Child Psychology and Psychiatry, and Allied Disciplines·John N Constantino, Thomas W Frazier

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