Whitaker D, Mcgraw P V, Levi D M
Department of Optometry, University of Bradford, U.K.
Vision Res. 1997 Aug;37(16):2207-16. doi: 10.1016/s0042-6989(97)00030-8.
We demonstrate a marked effect of prior adaptation upon the perceived position of subsequently presented stimuli using both first-order (luminance-defined) and second-order (texture-defined) stimuli. The effect of varying the contrast of the adapting and test stimuli depends only upon the ratio of adapting/test contrast. Adaptation effects for the two types of stimuli differ in terms of interocular transfer and rate of decay. Whilst adapting and testing with the same type of stimulus (first- or second-order) produces large shifts in perceived position, little or no crossover effect was found. The data are accounted for by a model in which the centroid of the linear combination of after-image and test stimulus is extracted.
我们使用一阶（亮度定义）和二阶（纹理定义）刺激，证明了先前适应对随后呈现刺激的感知位置有显著影响。改变适应刺激和测试刺激对比度的效果仅取决于适应/测试对比度的比率。两种类型刺激的适应效果在双眼间转移和衰减速率方面存在差异。虽然使用相同类型的刺激（一阶或二阶）进行适应和测试会导致感知位置的大幅偏移，但几乎没有发现交叉效应。这些数据由一个模型来解释，该模型提取后像和测试刺激线性组合的质心。
