| Autism spectrum disorder is a neurodevelopmental disorder characterized by social interaction disorder,narrow interests and repeated stereotypes.Influenced by the cognitive and behavioral characteristics of individuals with autism,there are limitations in the research methods of autism,which makes it difficult to clarify many controversies,including the hyperarousal model and the hypoarousal model.The "quasi-autistic" which takes the normal developing population as the research object provides a new way to clarify these disputes.Eye processing defect is an important basis for the diagnosis and early screening of autism.In order to better understand the abnormal eye processing phenomenon of autism and clarify the controversy of the hyperarousal model and the hypoarousal model,three experiments were designed to conduct autistic research.College students' autistic traits questionnaire(CAQ)was used to distinguish normal developing individuals into high autistic individuals and low autistic individuals to conduct " quasi-autistic" research.Stroop design was used in the experiment.The task was to judge the direction of arrow or line of sight.That was,the subject need to ignore the position of the stimulus(left and right)and judge the direction of the arrow or the direction of the line of sight(left and right).Experiment 1 was a behavioral experiment with 47 participants,including 21 with high autism trait and 26 with low autism trait;Experiment 2 was an eye movement experiment based on Experiment 1 with39 valid data,including 15 with high autism trait and 24 with low autism trait;Experiment 3was a skin electrical experiment.There were 37 effective subjects,including 15 with high autism trait and 22 with low autism trait.The main findings of Experiment 1 were as follows:(1)Classical Stroop effect appeared in different subjects under arrow stimulation;(2)The reversal of classical Stroop effect occurred in low autistic individuals under eye stimulation,while there was no difference in response time between high autistic individuals under the same and inconsistent conditions;the score of CAQ was negatively correlated with eyeconsistency and inconsistent response time difference;(3)There was neither classical Stroop effect nor reversal effect of classicalStroop effect on facial stimulation in the two groups.In experiment 2,no significant grouping effect was found in the following indicators:fixation time,first fixation time and first entry time by repeated measurements of variance analysis.Correlation analysis was performed on the time difference between the two conditions of the stimulus(consistent and inconsistent conditions)and the CAQ scale score.No significant effect was found.The main findings of Experiment 3 were as follows:(1)Although there was no significant difference in the rate of skin electrical changes between the two groups,the descriptive statistics showed that the rate of skin electrical changes of individuals with low autism traits tended to be higher than that of individuals with high autism traits;(2)In the correlation analysis between response time and physiological arousal,it was found that the response time of low autistic individuals to both stimuli was significantly negatively correlated with physiological arousal,while that of high autistic individuals was not significantly correlated.(3)In the correlation analysis between CAQ score and physiological arousal,it was found that CAQ score was negatively correlated with eye skin electrical change rate,but not significantly correlated with arrow skin electrical change rate.The conclusions were as follows:(1)Individuals with high autism traits had low sensitivity to gaze information;(2)The higher the autistic trait,the smaller the skin electrical rate of change,which supported the hypoarousal model;(3)effects of autistic traits on individual information processing had domain specificity,which mainly affected the processing of social information without affecting non-social processing. |
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