1978년 Kemp6)는 와우가 단순히 음을 받아들이는 역할을 할 뿐만 아니라, 소리를 발생시키는 기능이 있다는 사실을 밝혀내고 이를 이음향방사(otoacoustic emission, OAE)라는 개념으로 정리하였으며, 임상적으로 일과성음유발이음향방사 (transient evoked otoacoustic emission, TEOAE)와 변조 이음향방사(distortion product otoacoustic emission, DPOAE) 와 같은 유발이음향방사(evoked otoacoustic emission, EOAE)가 많이 사용된다. OAE는 빠르고 객관적이면서 비침습적인 검사 방법이기 때문에 소음성 난청과 메니에 르병 등에서 와우의 미세한 기능변화를 평가하고, 청력선별 검사(hearing screening test)의 목적으로 다양한 분야에 적용될 수 있다.1)2) 이 외에 최근에는 반대측 귀에 교차소
It is now generally accepted that otoacoustic emission (OAE) was an objective and non-invasive test for the functional exploration of active micro-mechanical characteristics of outer hair cells. And OAE has been widely used as a tool for hearing screening test. So the purpose of this study was to evaluate of the usefulness of two-channel OAE system as a hearing screening test. Transientevokedotoacoustic emission (TEOAE) and distortion product otoacoustic emission (DPOAE) were measured in each ear of eighteen adults (11 males；7 females) with normal hearing with ILO v6 two-channel OAE system. Results as followed. TEOAE and DPOAE amplitudes with unilateral stimulation were larger than with bilateral stimulation except for DPOAE amplitudes of the right ear. But there were not the significant difference for unilateral and bilateral stimulations as a whole. Therefore this study showed that two-channel OAE system will be usefully applied as a hearing screening test. KEY WORDS：Otoacoustic emission·Unilateral and bilateral stimulations·Two-channel OAE system.
INTRODUCTION MATERIALS AND METHODS RESULTS DISCUSSIONS AND CONCLUSIONS REFERENCES
