Normal Oscillatory Potentials in Rabbits.

Shin, Jae Pil; Kim, Sang Ha

Original Article

Journal of the Korean Ophthalmological Society 1995;36(3):457-465.
Published online March 1, 1995.

Normal Oscillatory Potentials in Rabbits.

Jae Pil Shin, Sang Ha Kim

Department of Ophthalmology, School of Medicine, Kyungpook National University, Taegu, Korea.

가토의 정상 진동소파전위

신재필(Jae Pil Shin),김상하(Sang Ha Kim)

Abstract

Ten pigmented raqbits were dark adapted for 30 minutes previously and then exposed to room illumination of 200 lux for 10 seconds. In mesopic adaptation, the oscillatory potentials(OPs) were recorded. The coefficient of variation in the peak latency, time interval, summed amplitude, and amplitude of each individual OP wavelet were obtained. The peak latency showed the smallest coefficient of variation. The summed amplitude of the OPa and the time interval showed smaller coefficient of variation than amplitude of each individual OP component. Therefore the peak latency, summed amplitude, and time interval may be reliable factors to evaluate the OPs. The increase of the light stimulus did not affect the amplitude of O3. However, O1 and O2 tended to increase in amplitude and O4 to decrease as the intensity of light stimulus increased. These facts may suggest that each individual component of OP has different orign. As the intensity of light stimulus increased, the summed amplitude of OPs was increased and peak latency of O1, O2, O3, and O4 were decreased. Time intervals showed no significant changes.

Key Words: Oscillatory potentials;Peak latency;Time interval;Summed amplitude