关键词: 孤独症谱系障碍, 眼动指标, 行为指标, 相关分析

Abstract: Objective To analyze the correlation between eye tack index and behavioral indicators in children with autism spectrum disorder (ASD) and with different degrees of attention to dynamic geometry (DGI) and social graph (DSI), in order to provide evidence for clinical research and intervention. Methods Totally 73 ASD cases were selected in Maternal and Child Health Hospital of Shenzhen City from September 2017 to November 2017. According to the time percentage of paradigm interest interval, participants were divided into three groups, including 23 cases in high attention DGI group,16 cases in high attention DSI group, and 34 cases in the group with close percentage of attention time. Portable eye tracker, the Second Edition of Adaptive Behavior Rating Scale (ABAS-Ⅱ) (for children), Autism Rating Scale (CARS) and Autism Observation Scale (ADOS) were used for test. The Results of eye tack indexes and behavioral indexes among three groups were compared and conducted for correlation analysis. Results The differences on social eye fixation time (FT), the percentage of social fixation time (TFD%), geometric FT and geometric TFD% among three groups were significant(all P<0.05). While the differences on geometry FC and social FC among three groups were not significant(all P＞0.05). Multiple linear regression analysis showed that in high attention DSI group, FT was positively associated with social networking and social movement, and was negatively related to leisure and home life, whereas eye movement social TFD%, geometric TFD%, geometric FT had no correlation with behavioral indicators. In the group with close percentage of attention time, social FT was negatively correlated with practical skills. And social TFD% was negatively associated with CARS, communication and self-care, whereas positively correlated with practical skills. Also, the geometric TFD% was positively correlated with preschool function. In high attention DGI group, the geometric TFD% was negatively correlated with the communication, geometric FT was negatively correlated with communication, but the correlation of social FT and social TFD% with behavioral indicators was not observed. Conclusion The eye tack indexs of ASD children with different attention degree to geometric figure and social figure are closely related to their major behavioral indicators.

Key words: autistism spectrum disorder, eye tack index, behavioral indicators, correlation analysis