A Study On The Characteristics And Diagnostic Value Of Eye Movement Patterns In Children With Autism Spectrum Disorder

Autism Spectrum Disorder(ASD)are a type of impairments in social communication where limited and restricted,repetitive patterns of behaviors were found in the patient,and limitation of interests were shown as a major symptom.It started in early childhood as neurodevelopmental disorders and could cause serious damage to the children’s physical and mental health.However,there is no breakthroughs in the existing research on the objective indicators of early identification and diagnosis of ASD.Therefore,based on the previous research on the social cognitive psychology of ASD diagnosed children,this study designed the eye movement experiment of the two main symptoms of ASD by using collected eye movement data,analyzed with the patterns of children with ASD characteristics and early diagnosis of the value of a preliminary study.In this study,we choose ASD diagnosed children aged between 2 to 7 years as ASD group,and normal development children matched for their age and gender ratio as normal control group.The experiments examined whether there are differences in visual attention,viewing modes of circumscribed interests and social objects between Children with ASD and normal children,and investgated the face processing of social information from the children.Experiment 1 investigated gaze characteristics from social stimuli,circumscribed stimuli,and non-circumscribed stimuli in Children with ASD to further examine the attention bias and distribution of Children with ASD.Experiment 2 is based on the experimental 1,where the film clips was used to analyze the reaction of key areas of eye movement data from face,eyes,and mouth,to explore their social information processing model.Finally,the diagnosis model is formed using logical regression from the prediction of the most significant eye movement pattern data collected from the previous two experiments.The results are:(1)From the different material provided,children with ASD and the control group showed significant differences in the eye movement.Children with ASD generally have less visual attention to the scene provided.(2)Children with ASD have better visual attention and processing performance for circumscribed interests.(3)Children with ASD with social stimuli have significant issues with visual attention across the still pictures or short clips of video.(4)The ASD predictive diagnosis model is established by logistic regression analysis represented in this paper.The sensitivity was 89.6%,the specificity was 95.6%and the accuracy was 93.0%.