聽力正常耳之耳聲發射

Otoacoustic Emissions in Normal Hearing Ears

梁家豐(Chia-Fong Liang) ； 陳美珠(Mei-Chu Chen) ； 楊美珍(Mei-Tseng Yang) ； 連江豐(Chiang-Feng Lien) ； 劉彥煌(Yen-Huan Liu) ； 張斌(Ping Chang)

《中華民國耳鼻喉科醫學會雜誌》 29卷2期 (1994/04) Pp. 57-62

https://doi.org/10.6286/1994.29.2.57

摘要

耳聲發射反應為了耳蝸主動機轉的存在。各家報告的click誘發耳聲發射的出現率，因使用的儀器設計不同而有很大的差別。我們收集52名成年國人之100個聽力正常耳，利用Otodynamic Analyzer ILO88，以click誘發短暫誘發耳聲投射。其中95耳（95%）為”發射存在”，即合乎可重覆性，非線性，及典型發射頻譜等耳聲發射的偵測標準。平均每次記錄所須時間為49.6秒。最後12耳的測量是在安靜、但非隔音的房間內進行，外耳道內的噪音並未增加。本研究顯示，利用Otodynamic Analyze，以click誘發成年國人之聽力正常耳，有很高的出現率，與國外報告一致。此項檢查具有快速、操作容易、非侵襲性、判讀客觀等優點，是理想的聽力篩檢，及內耳狀態追蹤、監視之工具。而且其探頭有很好的隔音效果，本檢果不一定要在隔音室內進行，臨床運用上更為方便。

關鍵字

耳聲發射 ； 聽力正常耳

並列摘要

Otoacoustic emissions reflect the exis-tenceof an active mechanism within the cochlea. Several designs have been devel-oped to record the otoacoustic emissions. However, great variation of detection rate of click-evoked otoacoustic emission in 100 normal-hearing ears of 52 Chinese adults. Recordings from ninty-five ears meet the criteria of “emis-sion present”, i.e., 1) replication of the emission waveform; 2) non-linear saturat-ing responses; 3) typical frequency content in the FFT analyses. It took 49.6 seconds, on an average, to record the otoacoustic emission from each ear. The last 12 record-ings were obtained in a quiet but not sound-proof room. It is concluded that, using Otodynamic Analyzer, 95% of normal hearing ears of Chinese adults in this study showed click-evoked otoacoustic emis-sions. Otoacustic emission measurement is a fast, easy-to-perform non-invasive, and objective method for studying the cochlea at the outer hair cell level. Rather good sealing effect of the probe has also been noted, that makes it convenient for hear-ing screening in the nursery and cochlear function monitoring in the ward.

並列關鍵字

otoacoustic emission ； normal hearing ear