Kaushall P, Parsons L M
Perception. 1981;10(5):545-62. doi: 10.1068/p100545.
Two studies of the discrimination of three-dimensional mirror-reflected objects were concerned with the influence of practice and stimulus information for shape, specifically binocular information and perspective transformations. In the first study subjects made 'same-different' responses to successively presented pairs of real objects, under binocular and monocular viewing conditions. In the second study subjects viewed object pairs on a rotating turntable, in five different displays. Neither binocular information nor perspective transformations contributed to isomorph discrimination. In both studies mental rotation and other less well specified strategies were employed. After practice, in contrast to previous reports, five of the six subjects in these studies produced reaction times unrelated to the orientation difference between the objects. These practice effects may reflect either extremely rapid rotation rates, the detection of rotationally invariant features, or the use of multiple strategies.
两项关于三维镜面反射物体辨别的研究关注了练习以及形状刺激信息（特别是双目信息和透视变换）的影响。在第一项研究中，受试者在双目和单目观察条件下，对相继呈现的成对真实物体做出“相同-不同”反应。在第二项研究中，受试者在五个不同的显示屏上，观看旋转转盘上的物体对。双目信息和透视变换均未对同构辨别产生影响。在这两项研究中，受试者均采用了心理旋转和其他不太明确的策略。与之前的报告相反，经过练习后，这些研究中的六名受试者中有五名产生的反应时间与物体之间的方向差异无关。这些练习效果可能反映了极快的旋转速度、对旋转不变特征的检测，或者是多种策略的使用。
