Rotgold G, Spitzer H
Department of Biomedical Engineering, Faculty of Engineering, Tel Aviv University, Israel.
J Opt Soc Am A Opt Image Sci Vis. 1997 Jun;14(6):1223-30. doi: 10.1364/josaa.14.001223.
Light adaptation to illumination that is presented peripherally changes the subjective color of a central Benham disk stimulus. In our experiments we kept the peripheral illumination achromatic and remote (not even adjacent to the test stimulus). Using a high-frame-rate monitor, we produced the subjective color stimulus, to our knowledge for the first time, on a computer screen in emulation of the Benham disk programs. The resulting changes in the perceived subjective color were as follows: (1) Remote adapting illumination caused a dramatic shift in the perceived subjective color with a span from red to green; (2) there was a trade-off dependence between the area and the intensity of the remote adapting illumination with respect to the perceived color of the test stimulus; (3) the effect of the remote adaptation showed no interocular interaction. This finding suggests that the effect is elicited from a low-level stage in the visual pathway. In addition, we were able to approximate experimentally the spatial profile of the contribution of the remote illumination through the shift in the perceived color. We also found an opposite general trend of color shifts that occurred when either the central stimulus luminance or the remote illumination was increased. A suggested model for the reversed color shifts trend is discussed.
对周边呈现的光照进行明适应会改变中央贝汉姆圆盘刺激的主观颜色。在我们的实验中，我们使周边光照为消色差且距离较远（甚至不与测试刺激相邻）。我们使用高帧率监视器，首次在计算机屏幕上模拟贝汉姆圆盘程序产生了主观颜色刺激。所产生的感知主观颜色变化如下：(1) 远距离适应性光照导致感知主观颜色发生显著变化，范围从红色到绿色；(2) 就测试刺激的感知颜色而言，远距离适应性光照的面积和强度之间存在权衡依赖关系；(3) 远距离适应的效果未表现出双眼间的相互作用。这一发现表明该效果是由视觉通路中的低水平阶段引发的。此外，我们能够通过感知颜色的变化在实验上近似远距离光照贡献的空间分布。我们还发现，当中央刺激亮度或远距离光照增加时，会出现相反的颜色变化总体趋势。文中讨论了一种针对反向颜色变化趋势的建议模型。
