Abstract
'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.
Highlights
A number of reports of color phenomena associated with moving or rapidly changing stimulation have appeared since the nineteenth century (Prevost 1826; Fechner 1838; Brewster 1861)
Our results suggest the reverse: that the ·perception of motion is linked to the perception of color and the spread of subjective color over achromatic regions defined by motion
When apparent motion was perceived, a green disk was seen in amodal completion under these conditions
Summary
A number of reports of color phenomena associated with moving or rapidly changing stimulation have appeared since the nineteenth century (Prevost 1826; Fechner 1838; Brewster 1861). Miyahara and Cicerone (1997) present results showing that, in the absence of luminance differences between dots in the test region and those in the surround region, chromaticity difference alone is sufficient to produce color spread from motion. In this case, color spread is perceived despite the absence of a clear subjective contour. If the luminance of the background field is reduced, in the motion mode observers report perceiving an amodally complete object, fully colored and matching the test dots in hue and saturation, moving behind a partially occluding screen. This suggests that color from motion may play a role in enhancing the visibiHty of camouflaged objects
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
