Abstract: To study the perception of threat through enironment-picture task, 30 children with autism spectrum disorders(ASD) participated in the exprimental research, and their eye movements were recorded with a Tobii X120 eyetracher. The results indicated that (1)children with ASD showed a perceptive advantage for threating targets, which was affected by the types of stimulating sources and the size of matrix in a certain degree, especially in the small size matrix of environment-picture task. (2)Children with ASD showed a fixed-attention to picture displaying an all-threating negative environment. Compared to other environmental picture, children with ASD were took more fixation duration time in the all-threating negative enviroment picture in the small size matirix task. (3)Eye-tracker technology can be effectively applied to the study of perception of threat in children with ASD, which could be provided more important reference material to the further research.

Key words: children with autism spectrum disorders, perception of threat, environment-picture task, eye movements study

摘要： 以30名自闭症谱系障碍（ASD）儿童为被试，通过环境图片视觉搜索方式，借助Tobii X120眼动仪记录被试的注视时间和注视次数探讨ASD儿童威胁知觉的特点。结果发现：（1）相比于非威胁目标，ASD儿童对威胁目标对象存在知觉优势，其威胁知觉受刺激类型及矩阵大小的影响。（2）ASD儿童对于全威胁刺激（蛇）的负性图片存在注意固着现象，表现在对全威胁刺激环境图片的注视时间显著增加。（3）眼动技术能够有效地应用于部分ASD儿童的威胁知觉研究。

关键词: 自闭症谱系障碍儿童, 威胁知觉, 环境图片任务, 眼动研究