Hirokazu Kumazaki Nagasaki University

Most children with autism spectrum disorder (ASD) have sensory processing idiosyncrasies such as hypersensitivity and desensitization, which can be explained by the presence of idiosyncrasies in texture perception. Even with the same sensory input, the pleasure and displeasure of the same sensory input varies among individuals with ASD, and it is clear that there are individual differences in the emotions received from sensory input, suggesting the existence of diversity in texture perception. The applicant has recognized the importance of focusing on changes over time after sensory input in understanding deep texture. The purpose of this study is to identify the factors that influence the temporal changes and individual differences in deep texture perception in children with ASD, who have specificity and diversity in deep texture perception. ASD children, non-affected ASD siblings, and healthy children will be recruited as subjects. We will evaluate changes over time in the children’s emotional responses when using the visual input stimulus presentation system being developed by the applicants, and statistically examine changes over time in depth texture recognition and its relationship to individual factors based on the relationship between visual input stimuli and emotional responses. We will detect characteristic elements and identify factors that influence individual differences in deep texture recognition.