Korth M, Rix R, Sembritzki O
Invest Ophthalmol Vis Sci. 1985 Mar;26(3):303-8.
Pattern ERGs in response to pattern-reversal stimuli varying in spatial frequency (range: 0.2-9.03 cycles/deg) and contrast (range: 0.03-0.93) were recorded from two normal male subjects. At most spatial frequencies the response amplitude increased linearly up to the highest contrast without saturation. From the amplitude-versus-contrast plots spatial contrast-transfer functions were derived for different levels of contrast. The sensitivity of the reversal response showed a spatial selectivity around 4 cycles/deg, which was more pronounced at low, rather than at high, contrast values. Good agreement with the psychophysical contrast-sensitivity curve was found. The procedure described permits a quantitative analysis of the sensitivity of the retina to spatial contrast stimuli and could be helpful in the diagnosis of diseases of the eye and the optic nerve.
从两名正常男性受试者记录了对空间频率（范围：0.2 - 9.03周/度）和对比度（范围：0.03 - 0.93）变化的模式反转刺激的模式视网膜电图（Pattern ERGs）。在大多数空间频率下，响应幅度在最高对比度之前呈线性增加且未饱和。从幅度与对比度的图中得出了不同对比度水平下的空间对比度传递函数。反转响应的敏感性在约4周/度处显示出空间选择性，在低对比度值时比高对比度值时更明显。发现与心理物理学对比度敏感性曲线有良好的一致性。所描述的程序允许对视网膜对空间对比度刺激的敏感性进行定量分析，并且可能有助于眼部和视神经疾病的诊断。
