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视网膜电图振荡电位参数的稳定性

范先群, 奚渭清, 李海生, 王仁谏, 张芸芸

(上海第二医科大学附属第九人民医院视觉电生理研究室，上海200011)

摘要

用系列强度ii档刺激闪光记录20例30只眼的视网膜电图(ERG)振荡电位(OP)，研究
OP的光强特性和参数稳定性。结果表明，OP各子波峰时和刺激光强呈指数曲线相关，相关性很高，而振幅和光强的函数关系的变异很大，相关性较低。不同对象间OP各子波振幅的变异系数较大，而峰时的变异系数较小。OP的峰时改变比振幅改变更为稳定。

关键词： 视网膜电图; 振荡电位; 刺激光强

VARIABILITY OF THE PARAMETERS OF OSCILLATORY POTENTIALS OF THE HUMAN ELECTRORETINOGRAM

FAN XIAN-QUN, XI WEI-QING, LI HAI-SHENWANG, REN-ZHOU , ZHANG YUN-YUN

(Divlsm of Visual Electrophysiology, Ninth People‘s Hospital, Shanghai Second Medical Uniaersity, Shanghai 200011)

Abstract

Oscillatory potentials (OP) of the electroretinogram (ERG) of 20 subjects providing 30 normal eyes were recorded by means of Ganzfeld stimulation at 11 stimulus imtensities. It was found that intensity-implicit time functions of the OP components are exponential，while the intensity-response curves are highly variable. The amplitudes of the four wavelets showed relatively large coefficients of variation and intersubject variation，while those of the implicit time are small. Thus it appears that measurement of oscillatory potential implicit time rather than amplitude may provide a more reliable index
to access certain retinal condition.

Key words: electroretinogram (ERG);oscillatory potential (OP);stimulus intensity

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引用本文：

范先群, 奚渭清, 李海生, 王仁谏, 张芸芸. 视网膜电图振荡电位参数的稳定性[J]. 生理学报 1996; 48 (5): .

FAN XIAN-QUN, XI WEI-QING, LI HAI-SHENWANG, REN-ZHOU , ZHANG YUN-YUN. VARIABILITY OF THE PARAMETERS OF OSCILLATORY POTENTIALS OF THE HUMAN ELECTRORETINOGRAM. Acta Physiol Sin 1996; 48 (5): (in Chinese with English abstract).