Gur M, Zeevi Y
J Opt Soc Am. 1980 Jan;70(1):53-9. doi: 10.1364/josa.70.000053.
Normal corneal electroretinograms (ERG) are analyzed in the frequency domain using the fast Fourier transform (FFT) and linear prediction (LP) methods. Four dominant frequencies at 18, 79, 126, and 159 Hz are found in the dark-adapted state. Light adaptation shifts the low frequency to higher frequency and the mid- and the two high-frequency components to lower frequencies. The relative amplitude of the high-frequency component resulting from the oscillatory potentials is quantified. It is shown that frequency-domain features are of a smaller variability than time-domain components, and can be extracted even from a noisy surface ERG.
使用快速傅里叶变换（FFT）和线性预测（LP）方法在频域中分析正常角膜视网膜电图（ERG）。在暗适应状态下发现了18、79、126和159Hz的四个主导频率。光适应使低频向高频移动，中频和两个高频分量向低频移动。对振荡电位产生的高频分量的相对幅度进行了量化。结果表明，频域特征的变异性比时域分量小，甚至可以从嘈杂的表面ERG中提取出来。
