Kuyk T K
Vision Res. 1982;22(10):1293-7. doi: 10.1016/0042-6989(82)90142-0.
Increment-threshold spectral sensitivity functions were taken foveally and at four other retinal locations with different sized test stimuli. For the fovea and parafovea at 4 degrees, a 1 degree, 250 msec stimulus of variable wavelength, flashed on a 1000 td white background yielded spectral sensitivity curves with three distinct maxima located near 455, 530-540 and 600 nm. As eccentricity increased so did the minimum spot size needed to produce spectral curves with three peaks. In particular, the 2 degrees 10' spot at 20 degrees, 4 degrees 10' at 30 degrees and 5.5 degrees at 45 degrees gave this result. Smaller stimuli in the periphery yielded curves with a minor peak at 455 nm, present under some conditions, and a major broad peak at 560 nm that resembled the CIE photopic luminosity function. Two different systems subserve detection: the three-peaked curves indicate mediation by the opponent-color system while the other type of function can be attributed to the non-opponent system.
采用不同大小的测试刺激，在中央凹以及视网膜的其他四个位置获取了增量阈值光谱敏感度函数。对于中央凹和4度处的旁中央凹，在1000 td白色背景上闪烁可变波长的1度、250毫秒刺激，得到的光谱敏感度曲线在455、530 - 540和600 nm附近有三个明显的最大值。随着偏心度增加，产生具有三个峰值的光谱曲线所需的最小光斑尺寸也增加。特别是，20度处的2度10分光斑、30度处的4度10分光斑和45度处的5.5度光斑得到了这样的结果。周边较小的刺激产生的曲线在某些条件下在455 nm处有一个小峰值，在560 nm处有一个类似于CIE明视觉光度函数的主要宽峰。有两种不同的系统参与检测：三峰曲线表明由对立色系统介导，而另一种类型的函数可归因于非对立系统。
