Breitmeyer B G, Williams M C
Department of Psychology, University of Houston, TX 77204-5341.
Vision Res. 1990;30(7):1069-75. doi: 10.1016/0042-6989(90)90115-2.
The magnitudes of metacontrast masking and of stroboscopic motion were investigated as a function of the color of isoluminant backgrounds on which the stimuli consisting of rectangular-shaped luminance decrements appeared. White, green, and red backgrounds were employed. Background isoluminance was obtained by minimal flicker settings with heterochromatic flicker of uniform fields. Both metacontrast and stroboscopic motion were decreased when red as compared to white or green backgrounds were used. Within the context of current sustained-transient channel approaches to visual masking and motion, these results indicate that the activity of transient channels is attenuated by red relative to white or green backgrounds. Moreover, these psychophysical findings may correspond to the suppressive effects of diffuse red light on neural activity in the transient M pathway of monkey.
研究了元对比掩蔽和频闪运动的强度与等亮度背景颜色之间的函数关系，在这些等亮度背景上呈现由矩形亮度递减组成的刺激。采用了白色、绿色和红色背景。通过均匀场的异色闪烁的最小闪烁设置来获得背景等亮度。与白色或绿色背景相比，使用红色背景时，元对比和频闪运动都会降低。在当前关于视觉掩蔽和运动的持续 - 瞬态通道方法的背景下，这些结果表明，相对于白色或绿色背景，红色会使瞬态通道的活动减弱。此外，这些心理物理学发现可能与漫射红光对猴子瞬态M通路中神经活动的抑制作用相对应。
