The motion-induced position shift depends on the perceived direction of bistable quartet motion
The motion-induced position shift depends on the perceived direction of bistable quartet motion
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DOI：
10.1016/j.visres.2004.05.003
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发表时间：
2004-01-01
期刊：
影响因子：
1.8
通讯作者：
Cavanagh, P
中科院分区：
文献类型：
--
作者：
Shim, WM;Cavanagh, P
运动可以影响附近静止物体的感知位置（Nature Neuroscience 3（2000）954）。为了研究在控制低水平运动信号的同时，高水平运动过程对位置偏移的影响，我们测量了位置偏移作为在四重奏中看到的运动的函数。在这个刺激中，可以看到沿着两条可能路径中的一条或另一条的运动。一个虚幻的位置转移，观察只有当闪光是相邻的运动被认为是路径。如果闪光与另一条路径相邻，在那里没有感觉到运动，就没有虚幻的位移。因此，对于相同的物理刺激，感知运动路径的变化决定了可以看到错觉位置偏移的位置。这一结果表明，高层次的运动过程本身就足以产生静止物体的位置偏移。还检查了运动的开始和偏移之间的测试闪光的定时的效果。位移在运动开始时最大，然后逐渐减小，在运动偏移时消失。我们提出了一个注意力排斥的移位效应的解释。(C)2004爱思唯尔有限公司保留所有权利。
Motion can influence the perceived position of nearby stationary objects (Nature Neuroscience 3 (2000) 954). To investigate the influence of high-level motion processes on the position shift while controlling for low-level motion signals, we measured the position shift as a function of the motion seen in a bistable quartet. In this stimulus, motion can be seen along either one or the other of two possible paths. An illusory position shift was observed only when the flashes were adjacent to the path where motion was perceived. If the flash was adjacent to the other path, where no motion was perceived, there was no illusory displacement. Thus for the same physical stimulus, a change in the perceived motion path determined the location where illusory position shifts would be seen. This result indicates that high-level motion processes alone are sufficient to produce the position shift of stationary objects. The effect of the timing of the test flash between the onset and offset of the motion was also examined. The position shifts were greatest at the onset of motion, then decreasing gradually, disappearing at the offset of motion. We propose an attentional repulsion explanation for the shift effect. (C) 2004 Elsevier Ltd. All rights reserved.