Fausti S A, Erickson D A, Frey R H, Rappaport B Z, Schechter M A
J Acoust Soc Am. 1981 May;69(5):1343-7. doi: 10.1121/1.385805.
High-frequency (8 to 20 kHz) hearing sensitivity was compared in thirty-six, 20 to 29-year-old military veterans with histories of steady-state or impulsive noise exposure. Threshold shifts were prominent for the steady-state noise subjects from 13 to 20 kHz. Mean thresholds from 8 through 12 kHz were maximally 20 dB poorer than a sample of young adult normals. Audiometric configurations for this group were generally smooth and symmetrical above 8000 Hz. For the impulsive noise group, substantial shifts in sensitivity were seen from 2 to 20 kHz and the high-frequency audiometric configurations were often jagged and/or asymmetrical. The variability of subjects in this group was greater than that seen in the steady-state noise exposed sample. Several case studies are presented to illustrate these characteristics. Measurement of auditory sensitivity from 8 to 20 kHz extends the mapping of basal cochlear function, providing information which often is not predictable from conventional audiometric measurement. This additional information provides for more comprehensive inter- and intra-subject comparison of the degree and extent of threshold changes present.
对36名年龄在20至29岁、有稳态或脉冲噪声暴露史的退伍军人的高频（8至20千赫）听力敏感度进行了比较。对于稳态噪声受试者，13至20千赫的阈值变化显著。8至12千赫的平均阈值比一组年轻成人正常样本最多差20分贝。该组的听力图在8000赫兹以上通常是平滑且对称的。对于脉冲噪声组，在2至20千赫之间可看到敏感度有显著变化，高频听力图往往参差不齐和/或不对称。该组受试者的变异性大于稳态噪声暴露样本中的变异性。给出了几个案例研究来说明这些特征。测量8至20千赫的听觉敏感度扩展了基底耳蜗功能的图谱，提供了通常无法从传统听力测量中预测的信息。这些额外信息有助于更全面地在受试者间和受试者内比较阈值变化的程度和范围。
