摘要
目的：通过滤波技术,排除震荡电位干扰,准确测量闪光视网膜电图a波、b波的隐含期及振幅。方法：对15例30眼门诊健康体检者行闪光视网膜电图检查，通频带为0．6～300Hz和0．6～70Hz时，分别测量a波、b波的隐含期及振幅，并进行对比分析，采用配对t检验。结果：将通频带设置为0．6～70Hz时，a波、b波表现为单峰，对比通频带为0．6～300Hz时，a波、b波的隐含期延长，振幅下降（P〈0．01）。结论：将通频带设置为0．6～70Hz时能获得光滑的a波、b波波形，能准确测量a波、b波的隐含期及振幅。
AIM： To accurately measure the implicit time and amplitude of a-, b-wave from flash electroretinogram （ ERG） through filtering technology, eliminate oscillatory potentials interference. METHODS： Full-field ERGs were recorded in 30 eyes of 15 physical check-ups, measured the implicit time and amplitude of a-, b-wave, when the passband was set at 0. 6 - 300Hz and 0. 6 - 70Hz, and correlation was performed among those results by paired t-test.-RESULTS： When the passband was set at 0.6 - 70Hz, a-, b-wave had a single peak, compared with the passband was set at 0.6 - 300Hz, the implicit time of a-, b-wave was prolonged, amplitude was decreased （ P〈0.01 ）. CONCLUSION ： A passband of 0.6 - 70Hz was the best choice to obtain smooth a- and b-waves from the original ERG, It could accurately measure the implicit time and amplitude of a-, b-wave.
出处
《国际眼科杂志》
CAS
2014年第11期2031-2033,共3页
International Eye Science
关键词
视网膜电图
视网膜
震荡电位
electroretinogram
retina
oscillatory potentials
