Enchancement of luminance flicker by color-opponent mechanisms.
Enchancement of luminance flicker by color-opponent mechanisms.
复制标题
通过颜色对抗机制增强亮度闪烁。
作者：
P. Gouras;E. Zrenner
猴子视网膜中的颜色对手神经节细胞对高时间频率的亮度闪烁作出反应。颜色相干性使这些细胞在低时间频率下对波长具有选择性，在高频率下逐渐丧失。这种损失是由于在这些细胞中的每一个的感受野中的光谱上不同的中心和周围机制的响应之间的频率依赖性相移。中心和周围的反应，这是在低的时间频率对抗，成为协同在高的，使这些细胞在高频率最响应于那些波长，他们在低频率响应最少。这种现象可以解释人类视觉中色彩闪烁和亮度闪烁之间的差异。
Color-opponent ganglion cells in the monkey retina respond to luminance flicker at high temporal frequencies. Color opponency, which makes these cells so selective of wavelength at low temporal frequencies, is progressively lost at high frequencies. This loss is due to a frequency-dependent phase shift between the responses of spectrally different center and surround mechanisms in the receptive field of each of these cells. Center and surround responses, which are antagonistic at low temporal frequencies, become synergistic at high ones, making these cells most responsive at high frequencies to those wavelengths to which they are least responsive at low frequencies. This phenomenon can explain the differences between chromatic and luminance flicker in human vision.