Department of Rehabilitation for Brain Functions, Research Institute, National Rehabilitation Center for Persons with Disabilities, 4-1 Namiki, Tokorozawa, Saitama, 359-8555, Japan.
Faculty of Systems Design, Tokyo Metropolitan University, 6-6 Asahigaoka, Hino, Tokyo, 191-0065, Japan.
Sci Rep. 2021 May 27;11(1):11240. doi: 10.1038/s41598-021-90230-6.
Eye movements toward sequentially presented face images with or without gaze cues were recorded to investigate whether those with ASD, in comparison to their typically developing (TD) peers, could prospectively perform the task according to gaze cues. Line-drawn face images were sequentially presented for one second each on a laptop PC display, and the face images shifted from side-to-side and up-and-down. In the gaze cue condition, the gaze of the face image was directed to the position where the next face would be presented. Although the participants with ASD looked less at the eye area of the face image than their TD peers, they could perform comparable smooth gaze shift to the gaze cue of the face image in the gaze cue condition. This appropriate gaze shift in the ASD group was more evident in the second half of trials in than in the first half, as revealed by the mean proportion of fixation time in the eye area to valid gaze data in the early phase (during face image presentation) and the time to first fixation on the eye area. These results suggest that individuals with ASD may benefit from the short-period trial experiment by enhancing the usage of gaze cue.
记录了对依次呈现的带有或不带有注视线索的人脸图像的眼动，以研究 ASD 患者是否能够根据注视线索前瞻性地完成任务，与他们的典型发育（TD）同龄人相比。线描人脸图像在笔记本电脑显示屏上依次呈现一秒钟，人脸图像左右和上下移动。在注视线索条件下，人脸图像的注视方向指向下一个人脸将呈现的位置。尽管 ASD 患者注视人脸图像的眼部区域的时间少于他们的 TD 同龄人，但他们可以在注视线索条件下对人脸图像的注视线索进行类似平滑的注视转移。在注视线索条件下，ASD 组的这种适当的注视转移在试验的后半段比前半段更为明显，这表现在早期阶段（在人脸图像呈现期间）注视时间在有效注视数据中的比例均值和首次注视眼部区域的时间上。这些结果表明，ASD 个体可能通过增强注视线索的使用而受益于短期试验实验。
