年龄和高频听力损失对低频（L）下对时间精细结构敏感性的影响。

The influence of age and high-frequency hearing loss on sensitivity to temporal fine structure at low frequencies (L).

机构信息

Department of Experimental Psychology, University of Cambridge, Downing Street, Cambridge CB2 3EB, United Kingdom.

出版信息

J Acoust Soc Am. 2012 Feb;131(2):1003-6. doi: 10.1121/1.3672808.

Abstract

Sensitivity to temporal fine structure (TFS) at low frequencies may be adversely affected by hearing loss at high frequencies even when absolute thresholds at low frequencies are within the normal range. However, in several studies suggesting this, the effects of hearing loss and age were confounded. Here, interaural phase discrimination (IPD) thresholds for pure tones at 500 and 750 Hz were measured for 39 subjects with ages from 61 to 83 yr. All subjects had near-normal audiometric thresholds at low frequencies, but thresholds varied across subjects at high frequencies. IPD thresholds were correlated with age. IPD thresholds for the test frequency of 750 Hz were weakly correlated with absolute thresholds at high frequencies, but these correlations became non-significant when the effect of age was partialed out. The results do not confirm that sensitivity to TFS at low frequencies is influenced by hearing loss at high frequencies, independently of age.

摘要

对低频时频结构（TFS）的敏感性可能会受到高频听力损失的不利影响，即使低频的绝对阈值在正常范围内。然而，在几项表明这一点的研究中，听力损失和年龄的影响是混杂的。在这里，对 39 名年龄在 61 至 83 岁的受试者进行了 500 和 750 Hz 纯音的两耳相位辨别（IPD）阈值测量。所有受试者在低频时的听阈接近正常，但高频时的听阈因人而异。IPD 阈值与年龄相关。750 Hz 测试频率的 IPD 阈值与高频的绝对阈值弱相关，但当年龄的影响被部分消除时，这些相关性变得不显著。结果并不证实低频 TFS 的敏感性受到高频听力损失的影响，而与年龄无关。