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ABR에서 반복회수 설정에 의한 전력선 잡음의 제거

Other Titles
 Power line noise reductions in ABR by properly chosen iteration numbers 
 안주현  ;  김수찬  ;  남기창  ;  심윤주  ;  김희남  ;  송철규  ;  김덕원  ;  신윤주 
 Journal of Biomedical Engineering Research (의공학회지), Vol.22(3) : 241-247, 2001 
Journal Title
Journal of Biomedical Engineering Research(의공학회지)
Issue Date
ABR ; 60 Hz power line noise ; Iteration number ; Stimulation rate ; Evoked potentials ; Audiometry
ABR(auditory brainstem response) is one of the audiometry which measures objective hearing threshold level by acquiring electric evoked potentials emanated from auditory nerve system responding to an auditory stimulation. However, the obtained potentials which are largely interfered by power line noise, have extremely low SNR, thus ensemble average algorithm is generally used. The purpose of this study was to investigate the effect of iteration number in ensemble average on the reduction of the power line noise. The power line noise was modeled to be a 60 Hz sinusoidal signal and the energy of the modeled signal was calculated when it was averaged. It was verified by simulation that the energy had the periodic zero points for each stimulation rate, and 60 Hz signal induced by the power line was applied to the developed ABR system to confirm that the period of zero energy point was the same with that of the simulation. By the properly selected iteration number, power line noise could be reduced and more reliable ABR could be acquired.
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Appears in Collections:
1. College of Medicine (의과대학) > Dept. of Medical Engineering (의학공학교실) > 1. Journal Papers
1. College of Medicine (의과대학) > Dept. of Otorhinolaryngology (이비인후과학교실) > 1. Journal Papers
Yonsei Authors
Kim, Deok Won(김덕원)
Kim, Hee Nam(김희남)
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