이음향방사(evoked otoacoustic emission, OAE)는 음향 자극에 의해서 혹은 자생적으로 와우의 외유모세포에서 발생되어 중이를 거쳐 외이에서 측정되는 음향에너지로 임상적으로 소음성 난청과 메니에르병 등에서 와우의 미세한 기 능변화를 평가하고, 청각선별검사(hearing screening test) 의 목적으로 다양한 분야에 이용된다.2)5) 또한 최근에는 반대 측 귀에 교차소음자극을 제시한 뒤 OAE의 억제정도(suppression) 를 평가해서 원심성 신경계(efferent nervous system) 의 기능평가에 대한 연구가 활발히 진행되고 있다.12)13) 이런 현상은 반대측 귀의 교차소음자극에 의해서 생성된 신
The purpose of thisstudy was to validatethe reliability of test-retest fortransientevokedotoacoustic emission (TEOAE) suppression with alternating technique. TEOAE suppression was measured in 18 adults (11 males；7 females) with normal hearing and the alternating technique was used for recording the TEOAE with and without contralateral noise. Results as followed. Contralateral noises of 40, 60 dBSPL reduced TEOAE amplitude except for 50 dBSPL. And correlation coefficients of TEOAE suppression with the contralateral noise of 60 dBSPL was .642 and the reliability of test-retest was so good. Therefore this study showed that TEOAE suppression with alternating technique is reliable and useful test to measure the contralateral suppression and could solve the problems related to the probe system and environmental condition. KEY WORDS：Alternating technique·TEOAE suppression·Test-retest reliability.
INTRODUCTION MATERIALS AND METHODS RESULTS DISCUSSIONS AND CONCLUSIONS REFERENCES
