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Auditory perception in autism spectrum disorderAuditory information processing underlying unique perception 
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Autism spectrum disorder (ASD) is characterized by communication difficulties and is known to have difficulties with listening in noisy environments, although pure tone listening ability is not a problem. However, it is unknown what the detail mechanisms and characteristics of the auditory perception of ASD individuals are. In this study, we approached the "auditory perception" of ASD individuals from three aspects. Instead of taking a "hear/don't hear" approach such as audiometric test, we examined the characteristics and perceptual content of auditory perception in detail, from the peripheral auditory system to the central auditory system. The results revealed some surprising, previously unknown characteristics, such as a strong tendency for ASD individuals to produce a variety of deviant perceptions when they listen to words repeatedly. Understanding the perceptual diversity of people with ASD by examining their perceptions may lead to the proposal of supporting methods for ensuring smooth communication of information.
[1] H. Fujihira, C. Itoi, S. Furukawa, N. Kato, M. Kashino, “Sensitivity to interaural level and time differences in individuals with autism spectrum disorder,” Scientific Reports, Vol. 12(1), pp. 19142, 2022.
[2] C. Itoi, N. Kato, M. Kashino, “People with autism perceive drastic illusory changes for repeated verbal stimuli,” Scientific Reports, Vol. 9(1), pp.15866, 2019.
Chihiro Itoi
Kashino Diverse Brain Research Laboratory