Cicerone C M, Hoffman D D
Department of Cognitive Sciences, University of California at Irvine 92697, USA.
Perception. 1997;26(11):1367-80. doi: 10.1068/p261367.
'Color from motion' describes the perception of a spread of subjective color over achromatic regions seen as moving. The effect can be produced in a display of multiple frames shown in quick succession, each frame consisting of a fixed, random placement of colored dots on a high-luminance white background with color assignments of some dots, but not dot locations, changing from frame to frame. Evidence is presented that the perception of apparent motion and the spread of subjective color can be activated by binocular combination of disjoint signals to each eye. The dichoptic presentation of every odd-numbered frame of the full stimulus sequence presented to one eye and, out of phase, every even-numbered frame to the other eye produces a compelling perception of color from motion equal to that seen with the full sequence presented to each eye alone. This is consistent with the idea that color from motion is regulated in sites at or beyond the convergence of monocular pathways. When the background field in the stimulus display is of low luminance, an amodally complete object, fully colored and matching the dots defining the moving region in hue and saturation, is seen to move behind a partially occluding screen. Observers do not perceive such an object in still view. Hence, color from motion can be used by the visual system to produce amodal completion, which suggests that it may play a role in enhancing the visibility of camouflaged objects.
“运动产生的颜色”描述了在被视为运动的消色差区域上主观颜色扩散的感知。这种效果可以在快速连续显示的多帧画面中产生，每帧画面由在高亮度白色背景上固定、随机放置的彩色点组成，一些点的颜色分配会逐帧变化，但点的位置不变。有证据表明，双眼对分别传入每只眼睛的不连续信号进行组合，可以激活对表观运动和主观颜色扩散的感知。将完整刺激序列的每一个奇数帧以双眼视差的方式呈现给一只眼睛，将每一个偶数帧以异相的方式呈现给另一只眼睛，会产生与单独将完整序列呈现给每只眼睛时相同强烈的运动产生的颜色感知。这与运动产生的颜色在单眼通路汇聚处或其之后的部位受到调节的观点是一致的。当刺激显示中的背景场亮度较低时，可以看到一个模态完整的物体，它颜色完全且在色调和饱和度上与定义运动区域的点相匹配，在一个部分遮挡的屏幕后面移动。观察者在静止视图中不会感知到这样的物体。因此，视觉系统可以利用运动产生的颜色来实现模态完成，这表明它可能在增强伪装物体的可见性方面发挥作用。
