Del Viva Maria Michela, Igliozzi Roberta, Tancredi Raffaella, Brizzolara Daniela
Department of Psychology, University of Florence, via S. Niccolò, 93, 50125 Florence, Italy.
Vision Res. 2006 Apr;46(8-9):1242-52. doi: 10.1016/j.visres.2005.10.018. Epub 2005 Dec 27.
Neuropsychological and psychophysical studies report controversial results regarding local-global visual processing and motion perception in autism. Here, we investigate contour integration and motion perception in an accurately diagnosed sample of autistic children, using low-level psychophysical tasks. We measured detection thresholds for a closed chain of Gabor patches, for different values of inter-element distance and we measured coherency thresholds of optic flow motion stimuli. Both experiments show comparable performances between autistics and normal subjects, demonstrating no evidence of early perceptual integration deficits. Some improvement in performance with age is detected in both groups.
神经心理学和心理物理学研究报告了关于自闭症患者局部-整体视觉处理和运动感知的有争议的结果。在这里，我们使用低层次心理物理学任务，对一组准确诊断的自闭症儿童样本进行轮廓整合和运动感知的研究。我们测量了不同元素间距值下，封闭的Gabor斑块链的检测阈值，并测量了光流运动刺激的连贯阈值。两个实验均显示自闭症患者和正常受试者之间表现相当，没有证据表明存在早期感知整合缺陷。两组均检测到随着年龄增长表现有所改善。
