Whether dots moving in two directions appear coherent or transparent depends on directional bias induced by surrounding motion
Whether dots moving in two directions appear coherent or transparent depends on directional bias induced by surrounding motion
复制标题
沿两个方向移动的点是否显得连贯或透明取决于周围运动引起的方向偏差
作者：
Takemura;H.;Tajima;S.;Murakami;I.
当在不同方向上移动的两个随机网点图案叠加时，根据方向的不同，运动看起来是连贯的或透明的。此外，当一个图案被另一个移动的图案包围时，中央刺激的感知运动会偏离周围运动的方向。这种现象被称为诱导运动。周围运动对运动连贯性和透明度的感知是如何调节的？研究发现，两个随机点的水平运动被另一个向下运动的刺激包围，似乎是沿着两个倾斜的方向移动：左上和右上。因此，当发生运动透明时，两个运动中的每一个都独立地与诱导的运动方向交互。此外，对于由左上和右上方向的两个物理运动组成的中央刺激，垂直运动中周围刺激的存在调制了运动一致性/透明度的知觉解决方案，使得如果与诱导的运动信号的交互缩小了两个中央运动之间的明显方向差异，则运动一致性优先于运动透明度。因此，运动刺激是被感知为连贯的还是透明的，是基于运动方向的内部表示来确定的，而运动方向可以通过相邻区域之间的空间交互来改变。
When two random-dot patterns moving in different directions are superimposed, motion appears coherent or transparent depending on the directional difference. In addition, when a pattern is surrounded by another pattern that is moving, the perceived motion of the central stimulus is biased away from the direction of the surrounding motion. That phenomenon is known as induced motion. How is the perception of motion coherence and transparency modulated by surrounding motion? It was found that two random-dot horizontal motions surrounded by another stimulus in downward motion appeared to move in two oblique directions: left-up and right-up. Consequently, when motion transparency occurs, each of the two motions interacts independently with the induced motion direction. Furthermore, for a central stimulus consisting of two physical motions in left-up and right-up directions, the presence of the surrounding stimulus in a vertical motion modulated the perceptual solution of motion coherence/transparency such that if interactions with an induced motion signal narrow the apparent directional difference between the two central motions, then motion coherence is preferred over motion transparency. Therefore, whether a moving stimulus is perceived as coherent or transparent is determined based on the internal representation of motion directions, which can be altered by spatial interactions between adjacent regions.