Day R H, Webster W R
Percept Psychophys. 1989 Nov;46(5):419-24. doi: 10.3758/bf03210856.
Four experiments were conducted to test earlier claims about the relationship between the negative afterimage and the McCollough effect. The first claim (Hansel & Mahmud, 1978) is that long-lasting afterimages occur when induced by the same alternating-stimulus procedure as that used to induce the McCollough effect. The second claim (Murch & Hirsch, 1972) is that afterimages can themselves induce McCollough effects if they are induced and paired sequentially with grating patterns. In testing these claims, a reliable computer-controlled color-cancellation technique developed earlier was used to measure the apparent color of both afterimages and McCollough effects objectively. No support was found for the first claim following alternative presentation of two homogeneously colored regions for total periods of 5 min (Experiment 1) and 20 min (Experiment 2). The second claim was fully supported: After an induction period of 7.3 min, a McCollough effect occurred for a red-vertical pairing but not for a green-horizontal pairing (Experiment 3); but after an induction period of 20 min, McCollough effects occurred strongly for both pairings (Experiment 4). The theoretical implications of these outcomes are considered in the context of recent theories of color and pattern processing in the visual system.
进行了四项实验，以检验先前关于负后像与麦卡洛效应之间关系的说法。第一个说法（汉塞尔和马哈茂德，1978年）是，当由与用于诱发麦卡洛效应相同的交替刺激程序诱发时，会出现持久的后像。第二个说法（默奇和赫希，1972年）是，如果后像被诱发并与光栅图案依次配对，那么后像本身可以诱发麦卡洛效应。在检验这些说法时，使用了先前开发的一种可靠的计算机控制颜色消除技术，以客观地测量后像和麦卡洛效应的表观颜色。在分别对两个均匀颜色区域进行5分钟（实验1）和20分钟（实验2）的交替呈现后，未发现对第一个说法的支持。第二个说法得到了充分支持：在7.3分钟的诱导期后，红色垂直配对出现了麦卡洛效应，而绿色水平配对未出现（实验3）；但在20分钟的诱导期后，两种配对都强烈出现了麦卡洛效应（实验4）。在视觉系统中颜色和图案处理的最新理论背景下，考虑了这些结果的理论意义。
