Electroretinographic Oscillatory Potentials in Different Aged Rats: an Analysis in the Domains of Time and Frequency  

作　　者：Hongjin Ye,Xiaoming Liu,Han Tie,Yongli Sun,Peizhong LiInstitute of Pharmacology and Toxicology Academy of Military Medical Sciences , Beijing 100850, China 

出　　处：《眼科学报》1998年第1期27-29,共3页Eye Science

摘　　要：Objectives: Electroretinographic Oscillatory Potentials (Ops) are considered to be the optimal parameter to study the retinal circulation disturbances the present we compared parameters of OPs between different aged rats under dark adaptationMethods: the scotopic ERG were performed in anaesthetized rats aged 3, 12,24 months. According a window of collective power spectrum field of the OPs was isolated by using the FFT and IFFT of the spectrum analysis program. The parameters in the time and frequency domains were calculated.Results: Results showed that the amplitudes of wavelets and the summed amplitudes of OPs declined with the increase of age. A reduction of the total power and dominated power of OPs was also found after the FFT. But implicit time of each OP and dominant frequency did not change obviously.Conclusions: The present study indicated that change of OPs of rat might be related to senile degeneration of the retina and circulative deficiency in retina in elder rats. Eye Science 1998; 14-27Objectives: Electroretinographic Oscillatory Potentials (Ops) are considered to be the optimal parameter to study the retinal circulation disturbances the present we compared parameters of OPs between different aged rats under dark adaptation Methods: the scotopic ERG were performed in anaesthetized rats aged 3, 12,24 months. According a window of collective power spectrum field of the OPs was isolated by using the FFT and IFFT of the spectrum analysis program. The parameters in the time and frequency domains were calculated. Results: Results showed that the amplitudes of wavelets and the summed amplitudes of OPs declined with the increase of age. A reduction of the total power and dominated power of OPs was also found after the FFT. But implicit time of each OP and dominant frequency did not change obviously. Conclusions: The present study indicated that change of OPs of rat might be related to senile degeneration of the retina and circulative deficiency in retina in elder rats. Eye Science 1998; 14-27 -29.

关 键 词：视网膜电流图 摆动电压 年龄 傅立叶转换 

分 类 号：R770.43[医药卫生—眼科]