Watanabe T, Zimmerman G L, Cavanagh P
Department of Psychology, Harvard University, Cambridge, MA 02138.
Percept Psychophys. 1992 Aug;52(2):161-6. doi: 10.3758/bf03206769.
We examined whether the orientation-contingent color aftereffect (the McCollough effect) could be mediated by subjective horizontal and vertical structure induced by the perception of transparency. In our experiments, red vertical bars and green horizontal bars were alternated as an adapting stimulus. After adaptation, subjects (n = 6) were asked to adjust the green and red saturation of a test pattern until they obtained a neutral gray. Horizontal and vertical stripes were combined in the test pattern in three different ways: (1) overlapping with a luminance combination that gave rise to a perception of transparent overlays of horizontal and vertical stripes (valid transparency condition), (2) overlapping with luminance combinations that did not induce a perception of transparency (invalid transparency condition) and that appeared more as a patchwork of checks, and (3) presented in adjacent, nonoverlapping areas. Our results showed that the McCollough effect was significantly greater in the valid transparency condition than in the invalid transparency conditions. The effect in the valid transparency condition was nevertheless less strong than was the effect seen with the standard test stimulus made up of nonoverlapping vertical and horizontal stripes. Our results suggest that the McCollough effect can be mediated by the subjective spatial organization (inner representation of vertical and horizontal stripes) that accompanies the perception of transparency in our stimulus.
我们研究了方向依存性颜色后效（麦卡洛效应）是否可由透明度感知所诱发的主观水平和垂直结构介导。在我们的实验中，红色垂直条纹和绿色水平条纹交替作为适应刺激。适应后，要求受试者（n = 6）调整测试图案中绿色和红色的饱和度，直至其呈现出中性灰色。测试图案中的水平和垂直条纹以三种不同方式组合：（1）与产生水平和垂直条纹透明叠加感知的亮度组合重叠（有效透明度条件），（2）与不诱发透明度感知（无效透明度条件）且看起来更像方格拼凑的亮度组合重叠，以及（3）呈现在相邻的非重叠区域。我们的结果表明，有效透明度条件下的麦卡洛效应显著大于无效透明度条件下的效应。然而，有效透明度条件下的效应强度低于由非重叠垂直和水平条纹组成的标准测试刺激所产生的效应。我们的结果表明，麦卡洛效应可由我们刺激中透明度感知所伴随的主观空间组织（垂直和水平条纹的内部表征）介导。
