Journal of Clinical Otolaryngology Head and Neck Surgery
The Busan, Ulsan, Gyeoungnam Branch of Korean Society of Otolaryngology-Head and Neck Surgery
원저

무음향 방음실의 정상청력 이명자에 관한 자발이음향방사

김영진1, 정상득1, 이태우1, 조태환1, 성창섭1
Young Jin Kim1, Sang Dug Jung1, Tae Woo Lee1, Tae Hwan Cho1, Chang Sup Seong1
1경북대학교 의과대학 이비인후과학교실
1Department of Otolaryngology, School of Medicine, Kyungpook National University

© Copyright 1993 The Busan, Ulsan, Gyeoungnam Branch of Korean Society of Otolaryngology-Head and Neck Surgery. This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

Published Online: May 31, 2020

Abstract

Otoacoustic emissions, discovered by David Kemp, are audio-frequencies that are transmitted from the cochlea to the middle ear and into the external ear canal. Spontaneous otoacoustic emissions(SOAEs) are low-level acoustic signals measured in the ear without any external acoustic stimulation,but it is not clear that SOAEs result from physio-logical mechanism or certain pathology. Authors investigated 24normal young adulthood within the 20dB HL who felt tinnitus in the anechoic chamber and then examination of SOAE was done in those people.

The results were as follows;

  1. SOAEs were recorded in 83.3% of the 24 subjects, 56.3% of 48 ears tested. It showed no difference between the incidence of bilateral type and those of unilateral type.

  2. The frequency range is between 580Hz and 6040Hz, and the average of frequency is approximately 2100Hz.

  3. Single emission is present in 15persons and maximal peak number was 5. The average number of SOAEs per ear was 1.7.

    It remains to be understood whether spontaneous emissions reflect normal auditory mechanics or some preclinical sensorineural abnormality.

Keywords: Anechoic Chamber; Tinnitus; SOAE