de Wit Tessa C J, Schlooz Wim A J M, Hulstijn Wouter, van Lier Rob
Psychiatry Department, Neuro Sensoric Cluster, Radboud University Nijmegen Medical Centre, PO Box 9101, 6500 HB Nijmegen, The Netherlands.
Eur Child Adolesc Psychiatry. 2007 Apr;16(3):168-77. doi: 10.1007/s00787-006-0585-9. Epub 2006 Nov 28.
Much evidence has been gathered for differences in visual perceptual processing in individuals with Autistic Spectrum Disorder. The presence of the fundamental process of visual completion was tested in a group of children with Pervasive Developmental Disorder (PDD), as this requires perceptually integrating visual structure into wholes. In Experiment 1, it was investigated whether visual completion is present for simple partly occluded shapes in a group of children with PDD and a typically developing group. In Experiment 2, the presence of contextual influences in visual completion was investigated for the two groups. A total of 19 children with PDD and 28 controls who were matched for chronological age and IQ took part in two primed-matching tasks. For both groups, visual completion was present and for both groups, contextual influences were found to be dominant in this process. However, only for the group with PDD no priming effects (PEs) were found from less regular primes on congruent test pairs. The group with PDD did integrate visual information into wholes and did this in a contextually dependent way. However, for more complex shapes, visual completion is weaker for this group.
关于自闭症谱系障碍个体在视觉感知处理方面的差异，已经收集了大量证据。在一组广泛性发育障碍（PDD）儿童中测试了视觉完形这一基本过程的存在情况，因为这需要将视觉结构在感知上整合为整体。在实验1中，研究了一组PDD儿童和一组发育正常儿童对于简单部分遮挡形状的视觉完形情况。在实验2中，研究了这两组在视觉完形中情境影响的存在情况。共有19名PDD儿童和28名在年龄和智商上匹配的对照组儿童参与了两项启动匹配任务。对于两组而言，视觉完形都存在，并且对于两组来说，在这个过程中情境影响都占主导。然而，仅在PDD组中，未发现来自不太规则启动刺激对一致测试对的启动效应（PEs）。PDD组确实将视觉信息整合为整体，并且是以情境依赖的方式进行的。然而，对于更复杂的形状，该组的视觉完形较弱。
