Wade N J, Salvano-Pardieu V
Department of Psychology, University of Dundee, U.K.
Vision Res. 1998 Feb;38(4):573-8. doi: 10.1016/s0042-6989(97)00196-x.
The local motion adaptation at the basis of the motion aftereffect (MAE) can be expressed in a variety of ways, depending upon the structure of the test display [Wade et al. (1996). Vision Research, 36, 2167-2175]. Three experiments are reported, which examined the characteristics of the test display and of the local adaptation process. In Experiment 1, MAEs were recorded in the central of three test gratings but their directions depended on the location of the centre relative to the adapting gratings. The effects of adapting motions in different directions were examined in Experiments 2 and 3, in which one or two adapting gratings were presented above or above and below a fixation cross. The upper grating always received the same (leftward) direction of motion during adaptation, and the lower grating was: moving in the opposite direction, stationary, moving in the same direction, or absent. The results indicate that no MAE is visible in the upper grating when a single test grating is observed experiment 2) and only occurs with two test gratings following differential adaptation between the upper and lower gratings (Experiment 3). Thus, the MAE occurs as a consequence of adapting restricted retinal regions to motion but it can only be expressed when differentially adapted regions are also tested.
基于运动后效（MAE）的局部运动适应可以通过多种方式来表达，这取决于测试显示的结构[韦德等人（1996年）。《视觉研究》，36，2167 - 2175]。本文报告了三个实验，这些实验考察了测试显示以及局部适应过程的特征。在实验1中，在三个测试光栅的中央记录到了运动后效，但其方向取决于中央相对于适应光栅的位置。在实验2和实验3中考察了不同方向的适应运动的效果，在这两个实验中，在注视十字的上方或上方和下方呈现一个或两个适应光栅。在适应过程中，上方的光栅总是接收相同（向左）的运动方向，而下方的光栅则是：向相反方向运动、静止、向相同方向运动或不存在。结果表明，当观察单个测试光栅时（实验2），在上方的光栅中看不到运动后效，只有在上下光栅之间进行差异适应后，出现两个测试光栅时才会出现运动后效（实验3）。因此，运动后效的出现是将视网膜受限区域适应运动的结果，但只有在对差异适应区域进行测试时才能表现出来。
