Hess R F, Nordby K
J Physiol. 1986 Feb;371:365-85. doi: 10.1113/jphysiol.1986.sp015981.
Threshold detection for sine-wave grating stimuli of varying spatial and temporal frequency was used to investigate the nature of spatial and temporal post-receptoral sensitivity in the typical, complete achromat. Threshold spatial and temporal sensitivities under low photopic conditions show no evidence of cone function. The abrupt fall-off in sensitivity is consistent with known psychophysical and electrophysiological measures of rod saturation. Threshold spatial and temporal sensitivities under scotopic conditions are identical in form and absolute sensitivity to that of the normal scotopic system. Spatial and temporal acuity measurements substantiate the above conclusions based on contrast sensitivity. We conclude that the typical and complete achromat possesses only a normal functioning rod post-receptoral mechanism.
采用对不同空间和时间频率的正弦波光栅刺激进行阈值检测，来研究典型的完全色盲患者空间和时间感受器后敏感性的本质。低明视条件下的阈值空间和时间敏感性未显示出视锥细胞功能的迹象。敏感性的突然下降与已知的杆体饱和的心理物理学和电生理学测量结果一致。暗视条件下的阈值空间和时间敏感性在形式和绝对敏感性上与正常暗视系统相同。空间和时间敏锐度测量证实了基于对比敏感度的上述结论。我们得出结论，典型的完全色盲患者仅拥有正常运作的杆体感受器后机制。
