McDermott J C, Fausti S A, Henry J A, Frey R H
Auditory Research Laboratory, U.S. Department of Veterans Affairs Medical Center, Portland, OR 97207.
J Am Acad Audiol. 1991 Apr;2(2):99-104.
The present study examines the reliability of masked high-frequency bone-conduction threshold measurements in 95 normal-hearing subjects. High-frequency pure-tone air-and bone-conduction thresholds were measured with a dedicated laboratory high-frequency auditory evaluation system using matched, modified Koss Pro/4X Plus earphones, and the Pracitronic KH 70/5 bone vibrator. A 400-Hz wide band masking noise centered at the frequency of the test tone was used to mask the nontest ear. Monaural masked bone-conduction threshold measurements were obtained at the ipsilateral mastoid of the ear with better high-frequency hearing. Two measurements were performed in each session, and each subject participated in two sessions. In several comparisons for test-retest consistency, high-frequency bone-conduction threshold measurements were as repeatable as air-conduction thresholds of identical frequency, or bone-conduction thresholds for frequencies of 4 kHz and less. High-frequency bone-conduction threshold measurement appears to be a sufficiently reliable tool for diagnosis of auditory disorders.
本研究检测了95名听力正常受试者的掩蔽高频骨导阈值测量的可靠性。使用配备匹配的改良Koss Pro/4X Plus耳机以及Pracitronic KH 70/5骨振器的专用实验室高频听觉评估系统，测量高频纯音气导和骨导阈值。以测试音频率为中心的400赫兹宽带掩蔽噪声用于掩蔽非测试耳。在高频听力较好的耳的同侧乳突处获得单耳掩蔽骨导阈值测量结果。每次测量进行两次，每位受试者参加两次测量。在几次重测一致性比较中，高频骨导阈值测量与相同频率的气导阈值或4千赫及以下频率的骨导阈值具有相同的可重复性。高频骨导阈值测量似乎是诊断听觉障碍的一种足够可靠的工具。
