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Audiol > Volume 2(2); 2006 > Article
Audiology 2006;2(2): 126-134.
Published online: December 31, 2006.
doi: http://dx.doi.org/10.21848/audiol.2006.2.2.126
Stacked ABR의 측정변수:전극부착위치
김진숙1, 임채봉2
1한림대학교 자연과학대학 언어청각학부 청각학전공, 청각언어연구소
2한림대학교 보건대학원 재활학과 청각학전공
Measurement Variables of Stacked ABR:Electrode Montage
Jin-Sook Kim1, Chae-Bong Lim2
1Department of Speech Pathology & Audiology, College of Natural Sciences, Audiology and Speech Pathology Research Institute, Hallym University, Chuncheon, Korea
2Department of Rehabilitation, Graduate School of Public Health, Hallym University, Chuncheon, Korea
Correspondence  Jin-Sook Kim ,Tel: (033) 248-2213, Fax: (033) 256-3420, Email: jskim@hallym.ac.kr
Received: November 29, 2006;  Accepted: December 17, 2006.  Published online: December 31, 2006.
ABSTRACT
To overcome the failure of standard ABRs to detect small tumors, the stacked ABR measure was recently developed. The stacked ABR is an amplitude measure which reflect the neural fiber activity from all frequency regions of the cochlea utilizing derived-band ABRs with high pass noise (HPN) masking procedures. As the stacked ABR is in the beginning stage, variable experiments should be followed to reduce several limitations for the clinical applications. This research introduces the domestic data of stacked ABR in Korea for the first time. The purpose can be defined as identifying an appropriate clinical parameters through analyzing different electrode locations. Normal Korean 20 adults, 10 females and 10 males, aged 20 to 29 participated in this study. Stacked ABRs were tested at the levels of click alone, click+8 kHz HPN, click+4 kHz HPN, click+2 kHz HPN, click+1 kHz HPN, click+0.5 kHz HPN, respectively, at the stimuli level at 60 dBnHL. Electrode montage was examined in two locations, mastoid and earlobe. The results did not show statistical significance in the averages of Fsp, noise, sweep and artifact according to the locations of electrodes except partial conditions of noise and sweeps. Noise were significaltly higher at mastoids than earlobes with the conditions of click+8 kHz HPN, click+4 kHz HPN and click+2 kHz HPN and sweeps were significaltly higher at mastoids than earlobes with the conditions of click+0.5 kHz HPN only. Additionally, Korean adults’ average amplitudes were higher than the suggested normal values. Conclusively, the appropriate clinical location seemed to be mastoids, although noise and PAM phenomenon seemed a little alleviated at earlobes. The clinical efficacy will be improved if the appropriate measurement conditions and stimuli levels were examined.
Key Words: Electrode montage·Stacked ABR·Derived band ABR.
중심단어: 전극부착위치· Stacked ABR· Derived band ABR.
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