Xian Sherry X, Shevell Steven K
Department of Psychology, University of Chicago, Chicago, IL, USA.
Vis Neurosci. 2004 May-Jun;21(3):383-8. doi: 10.1017/s0952523804213062.
How is chromatic induction affected by perceptual grouping? Chromatic induction has been studied extensively, as has grouping, but only a small number of experiments have connected them. Even fewer reports go beyond weakly controlled qualitative observations. We report here a new and substantial color shift caused by perceptual grouping: a shift in appearance due to chromatic induction in one part of the visual field occurs also in a separate region that belongs to the same group. The color appearance of a test square within various surrounds was measured by asymmetric matching. The test square was at the center of an "hourglass" structure formed by other elements in the surround. The test shifted in color appearance toward the appearance of these other elements, whose color was affected by local chromatic induction. Control experiments ruled out as explanations (1) direct chromatic induction from the other elements into the test area, and (2) the influence of background light occluded by introducing the elements forming the hourglass.
色觉诱导如何受到知觉分组的影响？色觉诱导已得到广泛研究，分组也是如此，但仅有少数实验将二者联系起来。甚至更少的报告超越了控制较弱的定性观察。我们在此报告一种由知觉分组导致的新的显著颜色偏移：由于视野中某一部分的色觉诱导而出现的外观变化，也会出现在属于同一组的另一个单独区域。通过非对称匹配测量了各种背景下测试方块的颜色外观。测试方块位于由背景中的其他元素形成的“沙漏”结构的中心。测试方块的颜色外观向其他元素的外观偏移，这些元素的颜色受到局部色觉诱导的影响。对照实验排除了以下解释：(1) 其他元素对测试区域的直接色觉诱导，以及(2) 引入形成沙漏的元素所遮挡的背景光的影响。
