自闭症谱系障碍儿童对环境图片威胁知觉的眼动研究

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。

An Eye Movements Study on the Perception of Threat through the Environment-picture Task among Children with Autism Spectrum Disorders

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.