南方医科大学学报2011，Vol.31Issue(12)：2057-2060,4.DOI:44-1627/R.20111209.1751.010
人类视网膜电图暗适应及明适应震荡电位的参数特征
Characteristics of dark-adapted and light-adapted oscillatory potentials in human electroretinogram
摘要
Abstract
Objective To characterize dark-adapted and light-adapted oscillatory potentials (Ops) in human electroretinogram (EGR) elicited by flashing light stimulation of the same intensity. Methods Dark- and light-adapted ERGs of normal eyes were studied. The frequency spectra of the extracted dark-adapted Ops and light-adapted Ops were analyzed by a fast Fourier transform. The peak frequency, latency and total power of the Ops were determined. Results The averaged peak frequency, latency, and power of the dark-adapted Ops was 125.3±9.93 Hz, 41.7±3.56 ms, and 9.25 ±5.55 (V ? S)2, as compared with 79.5 ±6.79 Hz, 50.8+5.36 ms, and 3.56 ±2.18 (V ? S)2 for light-adapted Ops, respectively, showing significant differences in the parameters between dark- and light-adapted Ops (P<0.001). Conclusion Compared with dark-adapted Ops, light-adapted Ops is characterized by a lower peak frequency and a lower power with a prolonged latency.关键词
震荡电位/暗适应/明适应Key words
oscillatory potentials/ dark-adapted/ light-adapted分类
医药卫生引用本文复制引用
银娟萍,雷博,彭惠,王隽,付校楠..人类视网膜电图暗适应及明适应震荡电位的参数特征[J].南方医科大学学报,2011,31(12):2057-2060,4.基金项目
重庆市卫生局项目(201002073) （201002073）
