Liu Baoxia, Berends Ellen M, Schor Clifton M
Vision Science Group, School of Optometry, University of California, Berkeley, CA 94720, USA.
J Vis. 2005 Dec 14;5(10):808-22. doi: 10.1167/5.10.5.
A frontoparallel plane viewed with unequal vertical magnification of the two ocular images appears rotated about a vertical axis (i.e., induced effect; Ogle, 1938). Several experiments were conducted to investigate changes in the visual system that occurred after adapting to the induced effect. Adaptation at 57 cm was tested using tall stimuli at various viewing distances to test for the adaptation of vertical size ratio (VSR) information and normalization of the slant percept. When aftereffects were expressed in units of slant, they were larger at 57 cm than other test distances and were not significantly different from each other at other distances. Short stimuli were used to test adaptation of eye position signals for azimuth. The aftereffects were in the opposite direction to those measured with tall stimuli. The combined results suggest that the visual system normalizes slant percepts based on the surface slant of the adaptation stimulus and when there is a conflict between VSR signals and eye position cues for azimuth that the primary eye position signal for azimuth is recalibrated toward the direction indicated by the binocular differential vertical magnification in the adaptation stimulus.
当双眼图像的垂直放大率不相等时，所观察到的额状平行平面似乎绕垂直轴旋转（即诱导效应；奥格尔，1938年）。进行了几项实验来研究适应诱导效应后视觉系统发生的变化。使用不同观察距离的高刺激物在57厘米处进行适应测试，以测试垂直尺寸比（VSR）信息的适应情况和倾斜感知的归一化。当后效应以倾斜单位表示时，它们在57厘米处比其他测试距离处更大，而在其他距离处彼此之间没有显著差异。使用短刺激物来测试方位角的眼位信号的适应情况。后效应的方向与用高刺激物测量的方向相反。综合结果表明，视觉系统根据适应刺激的表面倾斜度对倾斜感知进行归一化，并且当VSR信号与方位角的眼位线索之间存在冲突时，方位角的主要眼位信号会朝着适应刺激中双眼差分垂直放大率所指示的方向重新校准。
