Abstract

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Title:: Basic visual functions in children with autism spectrum disorder: a research based on event-related potentials

Author(s):: YUAN Fengyun1; 2; 3; YAO Keqin3; LIAO Keren3; TANG Shidi3; HE Shengxi3; LIU Zhengkui1; 2; 1. Key Laboratory of Mental Health, Institute of Psychology, Chinese Academy of Sciences, Beijing 100101, China; 2. Department of Psychology, University of Chinese Academy of Sciences, Beijing 100049, China; 3. Shenzhen Health Development Research Center, Shenzhen 518036, China

Keywords:: ; Keywords: autism spectrum disorder; visual function of unilateral visual field; event-related potential

Abstract:: Abstract: Objective To explore the visual abilities and characteristics of children with autism spectrum disorder (ASD) by event-related potential (ERP) technique. Methods A total of 25 ASD children aged 10 to 12 years were taken as experimental group, and another 25 age- and gender-matched healthy children were selected as control group. The characteristics of the development of the left and right occipital?lobes of the visual system in ASD children were investigated by visual half field technique. Results The changes in the various components of ERP (P1 and N2) caused by stimuli were remarkable.The results of behavioral measurement showed that compared with normal controls, ASD children had a prolonged reaction time and a lower accuracy rate, with significant differences (P<0.05). Conclusion Compared with normal children, ASD children may have disadvantages in the process of meaningless coding visual stimuli and retrieval extraction. The left and right sides of visual functions of children in the experimental group may not have obvious separation of processing functions, which result in low accuracy and efficiency of processing functions.