Kumar T, Beutter B R, Glaser D A
Department of Molecular and Cell Biology, University of California, Berkeley 94720.
Perception. 1993;22(10):1205-26. doi: 10.1068/p221205.
It is shown that human observers can use color both for detecting and for discriminating motion. The contributions of chromaticity and luminance to the detection and discrimination of motion are investigated with a high-contrast, nonisoluminant stimulus. The motion stimulus is a rectangular 'particle' defined by its luminance and chromaticity, which moves against a background containing luminance noise. Although the luminance noise is found to make achromatic particles undetectable over a large range of luminances, the addition of color to a particle can render it detectable and also enable accurate speed discriminations to be made. The contributions of both luminance and chromaticity were measured. The effect of changing the hue angle of the particle as it moves was also examined, and it was found that the detectability of motion is low in that circumstance.
研究表明，人类观察者可以利用颜色来检测和辨别运动。采用高对比度、非等亮度刺激，研究了色度和亮度对运动检测和辨别的贡献。运动刺激是一个由其亮度和色度定义的矩形“粒子”，它在包含亮度噪声的背景上移动。尽管发现亮度噪声会使消色差粒子在大范围亮度下无法被检测到，但给粒子添加颜色可以使其可被检测到，并且还能进行准确的速度辨别。测量了亮度和色度的贡献。还研究了粒子移动时改变其色调角的影响，发现在这种情况下运动的可检测性较低。
