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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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Citing This Article：

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).