自闭症谱系障碍儿童颜色视觉突显的眼动研究

On the Eye Movement Involving the Salience of ColorVision in Children with Autism Spectrum Disorders

以37名自闭症谱系障碍儿童为被试,采用颜色图片视觉搜索任务的形式,要求儿童迅速判断由红绿方块所组合成的矩阵图片刺激界面的异同,并借助Tobii X120眼动系统采集和分析被试的眼动数据,探讨自闭症谱系障碍儿童颜色视觉突显的眼动特征。结果发现:在目标呈现的刺激界面的任务中,被试的注视时间和注视点数显著增加;被试对2×2矩阵刺激界面的注视时间显著长于对3×3矩阵刺激界面的注视时间;被试对刺激界面进行任务搜索过程中,目标呈现方式与矩阵大小交互效应显著。因此,研究认为自闭症谱系障碍儿童存在颜色视觉突显,且这种突显在不同程度上受刺激材料的目标呈现方式及干扰项数目的影响。

This study, using the color picture-oriented visual search task to ask 37 children with autism spec- tnma disorders （ASD） to quickly tell the difference in the stimulation interfaces created by a matrix of red and green pictures, and using the Tobii X120 Eyetracker to collect and analyze the subjects＇ eye movement data, aims to probe into the characteristics of color vision salience in children with ASD. The results show the follow- ing： in the stimulation interface-based task, the subjects show a significantly increasin.g fixation time and fixation counts; the subjects spend more fmation time on the 2 ＊ 2 matrix stimulation interface than on the 3 ＊ 3 matrix stimulation interface; there is a significant interaction between the matrix size and the target type in the subjects＇ task of searching stimulation interfaces. The study concludes that children with ASD show a color vision salience, which is affected by target types and the number of distractions.