不同刺激音量對正常年輕成年人的歪成份耳聲傳射的影響

Effect of the Sound Pressure Level of the Stimulus to Distortion Product Otoacoustic Emissions in Normal Young Adults

洪敬賢(Ching-Hsien Hung) ； 許權振(Chuan-Jen Hsu) ； 林凱南(Kai-Nan Lin)

《中華民國耳鼻喉科醫學會雜誌》 32卷1期 (1997/02) Pp. 1-6

https://doi.org/10.6286/1997.32.1.1

摘要

我們對20名健康年輕人（40耳）做歪成份耳聲傳射（DPOAEs）檢查，以建立正常值分布資料。共以6種不同的音壓強度測試：分別為60-60、65-65、70-70、75-75、65-50、以及70-55 dB SPL。測試同時並記錄DPOAE附近頻率的背景噪音值。在此刺激範圍內，當兩純音音壓L1=L2時，DPOAE強度隨刺激音強度而增加；而在相同L1下，刺激音L1=L2+15 dB所得之DPOAE強度與L1=L2所得者無顯著差異，但變異量較大。背景噪音約在-12.5至-5.5 dB SPL之間，低頻噪音值較高。

關鍵字

歪成份耳聲傳射 ； 正常成年人

並列摘要

Distortion product otoacoustic emis-sions (DPOAEs) were measured in 20young adults (40 ears). All of them had normal hearing and no history of otologic disease. Six pairs of pure tone were used to establish the normal range of DPOAE-grams: The stimuli were 60-60, 65-65, 70-70, 75-75, 65-50, and 70-55 dB SPL. Base line noise was also measured around the frequencies of DPOAEs. With the primary tone level L1=L2, the amplitude of DPOAEs grossly increased with that of the stimuli from 60 to 75 dB SPL. Under the same L1, the amplitude of DPOAEs stimulated by primaries L1=L2+15 dB was not significantly different from that stimu-lated by L1=L2, but the variance of the former was larger. The base line noise level was between-2.5 and-5.5 dB SPL, and with higher level at lower frequencies.

並列關鍵字

distortion product otoacoustic emission ； normal adult