Lindsey D T, Pokorny J, Smith V C
J Opt Soc Am A. 1986 Jul;3(7):921-7. doi: 10.1364/josaa.3.000921.
We measured modulation sensitivity to a pair of equally luminous sinusoidally modulated lights (568 and 630 nm) as a function of their relative phase. Measurements were made for 2, 3, 6, and 12 Hz at a retinal illuminance of 100 Td. The data indicated that two processes were active and their outputs combined by a vector summation rule. There was a phase shift of -18 degrees to -20 degrees (630 nm leads 568 nm) at 6 Hz, no phase shift at 12 Hz, an equivocal shift at 2 Hz, and an indeterminate shift at 3 Hz. At frequencies where a phase shift was observed, our analysis indicated that the phase shift affected sensitivities measured at all relative phase settings. These results are inconsistent with models postulating equal contributions of long-wavelength- and middle-wavelength-receptors to centers and surrounds of processes responsible for the detection of luminance flicker.
我们测量了对一对等亮度的正弦调制光（568纳米和630纳米）的调制敏感度，该敏感度是其相对相位的函数。在视网膜照度为100特罗兰德（Td）的条件下，对2赫兹、3赫兹、6赫兹和12赫兹进行了测量。数据表明有两个过程在起作用，并且它们的输出通过矢量求和规则进行组合。在6赫兹时存在-18度至-20度的相移（630纳米领先于568纳米），在12赫兹时无相移，在2赫兹时相移不明确，在3赫兹时相移不确定。在观察到相移的频率下，我们的分析表明相移会影响在所有相对相位设置下测量的敏感度。这些结果与假设长波长和中波长感受器对负责检测亮度闪烁的过程的中心和周边有同等贡献的模型不一致。
