Verdon W, Adams A J
J Opt Soc Am A. 1987 Jan;4(1):91-5. doi: 10.1364/josaa.4.000091.
It has been suggested that the short-wavelength-sensitive cones (S cones) play a significant role in the transition from scotopic to photopic vision (the Purkinje shift). We address this issue directly over a 5-log10-unit range of light levels covering scotopic, mesopic, and photopic vision. At each light level we make flicker matches to two reference stimuli by 2-Hz flicker photometry. The two reference lights (441 and 481 nm) differ only in their stimulation of S This novel technique utilizes the different magnitudes of the rod and cone Stiles--Crawford effects. Despite the large difference in S-cone stimulation by the two reference lights (more than 1 log10 unit), the pairs of luminosity functions are indistinguishable at each light level tested. The results indicate that S cones do not contribute to either photopic or mesopic luminosity.
有人提出，短波敏感视锥细胞（S视锥细胞）在从暗视觉到明视觉的转变（浦肯野氏位移）中起重要作用。我们在覆盖暗视觉、中间视觉和明视觉的5个对数单位的光强范围内直接研究了这个问题。在每个光强水平下，我们通过2赫兹闪烁光度法对两个参考刺激进行闪烁匹配。这两个参考光（441纳米和481纳米）仅在对S视锥细胞的刺激上有所不同。这种新技术利用了视杆细胞和视锥细胞的斯泰尔斯-克劳福德效应的不同大小。尽管两个参考光对S视锥细胞的刺激差异很大（超过1个对数单位），但在每个测试的光强水平下，光度函数对都是无法区分的。结果表明，S视锥细胞对明视觉或中间视觉的光度都没有贡献。
