Why middle-aged listeners have trouble hearing in everyday settings.
Why middle-aged listeners have trouble hearing in everyday settings.
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DOI：
10.1016/j.cub.2012.05.025
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发表时间：
2012-08-07
期刊：
影响因子：
9.2
通讯作者：
Shinn-Cunningham, Barbara G.
中科院分区：
文献类型：
--
作者：
Ruggles, Dorea;Bharadwaj, Hari;Shinn-Cunningham, Barbara G.
有趣的是，中年听众报告说，即使他们有正常的听力阈值，在社交场合交谈也有困难。此外，听力“正常”的年轻成年听众在类似的语音流中选择性地注意语音的能力也各不相同。忽略年龄，这些个体差异与听觉脑干中存在的时间编码精度的生理差异相关，这表明阈上声音编码的保真度有助于解释个体差异。在这里，我们重新审视了早期衰老是否会影响个人在日常环境中的沟通能力的难题。虽然绝对的选择性注意能力不是由年龄预测的，但随着年龄的增加，混响能量对选择性注意的干扰越来越大。将脑干反应分解为与刺激精细结构和包络编码相对应的组件，我们发现年龄会改变脑干组件预测性能。具体来说，中年听众似乎严重依赖于时间的精细结构，这是更多的混响能量比时间包络结构的破坏。相比之下，信封线索的保真度预测年轻人的表现。这些结果表明，时间包络线索影响空间听觉混响设置比通常赞赏，并帮助解释为什么中年听众在日常生活中有特别的沟通困难。
Anecdotally, middle-aged listeners report difficulty conversing in social settings, even when they have normal audiometric thresholds. Moreover, young adult listeners with “normal” hearing vary in their ability to selectively attend to speech amid similar streams of speech. Ignoring age, these individual differences correlate with physiological differences in temporal coding precision present in the auditory brainstem, suggesting that the fidelity of encoding of suprathreshold sound helps explain individual differences. Here, we revisit the conundrum of whether early aging influences an individual’s ability to communicate in everyday settings. Although absolute selective attention ability is not predicted by age, reverberant energy interferes more with selective attention as age increases. Breaking the brainstem response down into components corresponding to coding of stimulus fine structure and envelope, we find that age alters which brainstem component predicts performance. Specifically, middle-aged listeners appear to rely heavily on temporal fine structure, which is more disrupted by reverberant energy than temporal envelope structure is. In contrast, the fidelity of envelope cues predicts performance in younger adults. These results hint that temporal envelope cues influence spatial hearing in reverberant settings more than is commonly appreciated and help explain why middle-aged listeners have particular difficulty communicating in daily life.
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DOI：
10.1121/1.2998779
发表时间：
2008-12
期刊：
The Journal of the Acoustical Society of America
影响因子：
--
作者：
He NJ;Mills JH;Ahlstrom JB;Dubno JR
通讯作者：
Dubno JR
影响因子：
2.8
作者：
Clinard CG;Tremblay KL;Krishnan AR
通讯作者：
Krishnan AR
影响因子：
2.4
作者：
Lavandier, Mathieu;Culling, John F.
通讯作者：
Culling, John F.
影响因子：
2.4
作者：
Moore, Brian C. J.;Glasberg, Brian R.;Hopkins, Kathryn
通讯作者：
Hopkins, Kathryn
影响因子：
2.4
作者：
GOBLICK, TJ;PFEIFFER, RR
通讯作者：
PFEIFFER, RR