Itsuki N, Kubo M, Nishikawa Y
Department of Electrical Engineering, Niihama National College of Technology, Japan.
Nippon Ganka Gakkai Zasshi. 1993 Apr;97(4):514-8.
The time curve of the electrooculogram (EOG) as applied to clinical diagnosis is measured as the changes in the standing potentials around the eyes when a subject performs saccadic eye movements of constant amplitude. If the characteristics of these potential changes caused by the eye movements are known, the time curves of EOG can be derived from the potential changes generated by saccadic eye movements of random amplitude, by transforming the measured potentials into the exact values corresponding to the constant amplitudes of saccades. We have already reported that the characteristic curves of EOG are proportional to the angles of the eye movements within +/- 20. However, Fenn and Hursh reported that the characteristics of saccadic eye movements for larger amplitudes up to about 80 degrees were sinusoidal functions. Other workers have reported linear relations of the characteristics of EOG. In this report we attempted to clarify whether the characteristics of EOG were linear or sinusoidal. From our experiments it became clear that the characteristics of EOG could be approximated to straight lines up to about 80 degrees (visual angle).
应用于临床诊断的眼电图（EOG）时间曲线是通过测量受试者进行恒定幅度扫视眼动时眼睛周围静息电位的变化来测定的。如果已知由眼动引起的这些电位变化的特征，那么通过将测量的电位转换为与扫视恒定幅度相对应的精确值，就可以从随机幅度扫视眼动产生的电位变化中得出EOG的时间曲线。我们已经报道过，在±20°范围内，EOG的特征曲线与眼动角度成正比。然而，芬恩和赫什报道称，幅度高达约80度的扫视眼动特征是正弦函数。其他研究者报道了EOG特征的线性关系。在本报告中，我们试图阐明EOG的特征是线性的还是正弦的。从我们的实验中可以清楚地看出，在大约80度（视角）范围内，EOG的特征可以近似为直线。
