CAJ | 학술논문

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0.6~300 Hz和0.6~70 Hz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0.6~300 Hz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0.6~70 Hz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。
목적：통과려파기술,배제진탕전위간우,준학측량섬광시망막전도a파、b파적은함기급진폭。 　　방법：대15례30안문진건강체검자행섬광시망막전도검사,통빈대위0.6~300 Hz화0.6~70 Hz시,분별측량a파、b파적은함기급진폭,병진행대비분석,채용배대 t검험。 　　결과：장통빈대설치위0.6~70Hz시,a파、b파표현위단봉,대비통빈대위0.6~300 Hz시, a파、b파적은함기연장,진폭하강(P<0.01)。 　　결론：장통빈대설치위0.6~70 Hz시능획득광활적a파、b파파형,능준학측량a파、b파적은함기급진폭。
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.