APPARENT MOTION AND PULFRICH EFFECT
APPARENT MOTION AND PULFRICH EFFECT
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DOI：
10.1068/p040003
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发表时间：
1975-01-01
期刊：
影响因子：
1.7
通讯作者：
THOMPSON, P
中科院分区：
文献类型：
--
作者：
MORGAN, MJ;THOMPSON, P
Pulfrich钟摆效应，通过观察一个移动的物体与过滤器在一只眼睛，检查与目标刺激明显，而不是连续的，运动。过滤器引起的深度效应持续存在，直到达到目标呈现的一定程度的不透明性，然后它就消失了。在深度效应破坏之前可以容忍的不透明程度随着过滤器的密度而增加。可以认为，滤波器确定了对眼睛的连续输入的配对中的移位，使得未滤波眼睛中的目标位置与滤波眼睛中的先前目标位置融合。然而，看起来移位配对效应不能解释当目标重复性小于约30 ms时所看到的深度印象。在重复性的该值以下，滤波器可以产生深度效果，即使当其引入的延迟与输入的重复性相比很小时也是如此。在持续时间小于30 ms的情况下观察到的深度效应似乎与在连续运动中刺激获得的深度效应具有相同的幅度。它的结论是，一个过滤器可以引起两种不同的深度移位与明显的运动刺激。
The Pulfrich pendulum effect, obtained by viewing a moving object with a filter over one eye, was examined with target stimuli in apparent, rather than continuous, motion. The filter-induced depth effect persisted until a certain degree of intermittency in the presentations of the target was reached, and then it broke down. The degree of intermittency that could be tolerated before the depth effect broke down increased with the density of the filter. It could be argued that the filter determined a shift in the pairing of successive inputs to the eyes, such that the target position in the unfiltered eye was fused with the preceding target position in the filtered eye. However, it appears that the shifted-pairing effect cannot account for the depth impression seen when the target intermittency is less than about 30 ms. Below this value of intermittency a filter can produce a depth effect even when the delay it introduces is small in comparison to the intermittency of the input. The depth effect seen with intermittencies less than 30 ms appears to be of the same magnitude as that obtained with stimuli in continuous motion. It is concluded that a filter can cause two different kinds of depth shift with apparently moving stimuli.