Humes L E, Bess F H, Schwartz D M
J Am Audiol Soc. 1978 May-Jun;3(6):253-7.
This study examined the relationship between two previously proposed measures of the fragile ear, the aural overload test and word discrimination score in noise. Ten normal-hearing young adults served as subjects. Aural overload thresholds were determined for fundamental frequencies of 500, 1000, and 2000 Hz. Word intelligibility in noise was assessed with tests using an open response-set (Northwestern University Auditory Test No. 6) and closed response-set (Modified Rhyme Test) at a variety of primary-to-secondary ratios. Results revealed a lack of correlation between threshold of overload and word discrimination in noise at unfavorable primary:secondary ratios for both tests(-6 and 0 dB for the NU-6' s and -12 and -6 dB for the Modified Rhythm Test). Significant correlations (p less than 0.05) were achieved, however, with both word discrimination tests when administered at the more advantageous primary:secondary ratios.
本研究考察了之前提出的两种脆弱听力测量方法之间的关系，即听觉过载测试和噪声中的单词辨别分数。十名听力正常的年轻人作为受试者。测定了500、1000和2000赫兹基频的听觉过载阈值。使用开放反应集（西北大学听觉测试6号）和封闭反应集（改良韵律测试）在多种主次比下进行测试，评估噪声中的单词可懂度。结果显示，在两种测试的不利主次比（西北大学听觉测试6号为-6和0分贝，改良韵律测试为-12和-6分贝）下，过载阈值与噪声中的单词辨别之间缺乏相关性。然而，当在更有利的主次比下进行两种单词辨别测试时，均取得了显著相关性（p小于0.05）。
