Nawrot M, Blake R
Department of Psychology, Vanderbilt University, Nashville, TN 37240.
Percept Psychophys. 1991 Mar;49(3):230-44. doi: 10.3758/bf03214308.
In a series of psychophysical experiments, an adaptation paradigm was employed to study the influence of stereopsis on perception of rotation in an ambiguous kinetic depth (KD) display. Without prior adaptation or stereopsis, a rotating globe undergoes spontaneous reversals in perceived direction of rotation, with successive durations of perceived rotation being random variables. Following 90 sec of viewing a stereoscopic globe undergoing unambiguous rotation, the KD globe appeared to rotate in a direction opposite that experienced during the stereoscopic adaptation period. This adaptation aftereffect was short-lived, and it occurred only when the adaptation and test figures stimulated the same retinal areas, and only when the adaptation and test figures rotated about the same axis. The aftereffect was just as strong when the test and adaptation figures had different shapes, as long as the adaptation figure contained multiple directions of motion imaged at different retinal disparities. Nonstereoscopic adaptation figures had no effect on the perceived direction of rotation of the ambiguous KD figure. These results imply that stereopsis and motion strongly interact in the specification of structure from motion, a result that complements earlier work on this problem.
在一系列心理物理学实验中，采用了一种适应范式来研究立体视觉对在模糊动态深度（KD）显示中旋转感知的影响。在没有预先适应或立体视觉的情况下，一个旋转的球体在感知到的旋转方向上会自发地反转，连续的感知旋转持续时间是随机变量。在观看一个明确旋转的立体球体90秒后，KD球体似乎朝着与立体适应期所经历的方向相反的方向旋转。这种适应后效是短暂的，并且只有当适应图形和测试图形刺激相同的视网膜区域时才会出现，而且只有当适应图形和测试图形绕着同一轴旋转时才会出现。当测试图形和适应图形形状不同时，只要适应图形包含在不同视网膜视差下成像的多个运动方向，后效同样强烈。非立体适应图形对模糊KD图形的感知旋转方向没有影响。这些结果表明，在从运动中确定结构的过程中，立体视觉和运动强烈相互作用，这一结果补充了此前关于这个问题的研究工作。
