Direction repulsion in motion transparency
Direction repulsion in motion transparency
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DOI：
10.1017/s0952523800007227
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发表时间：
1996-01-01
影响因子：
1.9
通讯作者：
Blake, R
中科院分区：
文献类型：
--
作者：
Hiris, E;Blake, R
一系列实验研究了由两个平面的点在不同方向上移动组成的运动透明显示器中的运动方向和深度分离。方向和深度的判断是从人类观察者观看这些“双向”动画序列，有和没有明确的立体深度信息。我们发现：（1）运动方向的错误知觉（“方向排斥”）发生在两个空间混合的运动方向彼此在60度内时;（2）方向排斥在基本方向上最小;（3）对两个运动方向的感知总是导致在深度上分离的分离运动平面;（4）立体深度信息对方向排斥的大小没有影响，但它确实消除了运动方向之间的深度关系的歧义。这些结果的背景下，一个两阶段的模型的运动透明度。在该模型中，运动方向被登记在受到抑制性相互作用的单元内，该抑制性相互作用导致方向排斥，这些单元的输出被汇集在针对方向和视差进行选择的单元内。
A series of experiments investigated perceived direction of motion and depth segregation in motion transparency displays consisting of two planes of dots moving in different directions. Direction and depth judgments were obtained from human observers viewing these ''bi-directional'' animation sequences with and without explicit stereoscopic depth information. We found that (1) misperception of motion direction (''direction repulsion'') occurs when two spatially intermingled directions of motion are within 60 deg of each other; (2) direction repulsion is minimal at cardinal directions; (3) perception of two directions of motion always results in separate motion planes segregated in depth; and (4) stereoscopic depth information has no effect on the magnitude of direction repulsion, but it does disambiguate the depth relations between motion directions. These results are developed within the context of a two-stage model of motion transparency. On this model, motion directions are registered within units subject to inhibitory interactions that cause direction repulsion, with the outputs of these units pooled within units selective for direction and disparity.