Department of Psychology and Human Development, Institute of Education, University of London, United Kingdom.
Res Dev Disabil. 2013 Oct;34(10):3352-60. doi: 10.1016/j.ridd.2013.06.043. Epub 2013 Jul 31.
Individuals with Williams syndrome (WS) present with impaired functioning of the dorsal visual stream relative to the ventral visual stream. As such, little attention has been given to ventral stream functions in WS. We investigated colour processing, a predominantly ventral stream function, for the first time in nineteen individuals with Williams syndrome. Colour discrimination was assessed using the Farnsworth-Munsell 100 hue test. Colour categorisation was assessed using a match-to-sample test and a colour naming task. A visual search task was also included as a measure of sensitivity to the size of perceptual colour difference. Results showed that individuals with WS have reduced colour discrimination relative to typically developing participants matched for chronological age; performance was commensurate with a typically developing group matched for non-verbal ability. In contrast, categorisation was typical in WS, although there was some evidence that sensitivity to the size of perceptual colour differences was reduced in this group.
患有威廉姆斯综合征（WS）的个体表现出与腹侧视觉流相比，背侧视觉流功能受损。因此，WS 患者的腹侧视觉流功能很少受到关注。我们首次在 19 名 WS 患者中研究了颜色处理，这是一种主要的腹侧视觉流功能。使用 Farnsworth-Munsell 100 色调测试评估颜色辨别能力。使用匹配样本测试和颜色命名任务评估颜色分类。还包括一项视觉搜索任务，作为对感知颜色差异大小的敏感性的度量。结果表明，与按年龄匹配的典型发育参与者相比，WS 个体的颜色辨别能力降低；表现与按非言语能力匹配的典型发育组相当。相比之下，WS 患者的分类能力是典型的，尽管有证据表明，该组对感知颜色差异大小的敏感性降低。
