视网膜电图振荡电位参数的稳定性  

VARIABILITY OF THE PARAMETERS OF OSCILLATORY POTENTIALS OF THE HUMAN ELECTRORETINOGRAM

作　　者：范先群[1] 奚渭清[1] 李海生[1] 王仁诹 张芸芸[1] 

机构地区：[1]上海第二医科大学附属第九人民医院视觉电生理研究室

出　　处：《生理学报》1996年第5期497-500,共4页Acta Physiologica Sinica

摘　　要：用系列强度１１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。Oscillatory potentials (OP) of the electroretinogram (ERG) of 20 subjects providiug 30 normal eyes were recorded by means of Ganzfeld stimulation at 11 stimulus intensities. It was found that intensity-implicit time functions of the OP components areexponential, while the intensity-response curves are highly variable. The amplitudes ofthe 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 indexto access certain retinal condition.

关 键 词：视网膜电图 振荡电位 眼病 诊断 

分 类 号：R770.43[医药卫生—眼科]