Decline of speech understanding and auditory thresholds in the elderly
Decline of speech understanding and auditory thresholds in the elderly
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DOI：
10.1121/1.1953207
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发表时间：
2005-08-01
影响因子：
2.4
通讯作者：
Haupt, KM
中科院分区：
文献类型：
--
作者：
Divenyi, PL;Stark, PB;Haupt, KM
一组29名老年受试者在研究开始时年龄在60.0至83.7岁之间，听力损失不超过中度，他们接受了两次测试，平均间隔5.27年。这些测试测量了纯音阈值，安静时的单词识别，以及对各种类型的失真（低通滤波，时间压缩）或干扰（单个扬声器，串音噪声，混响）的语音理解。在两个测试阶段之间，性能持续显著下降。此外，言语理解测量的变异性在测试阶段之间显著增加，但听力测量的变异性没有增加。观察到右耳优势，但这种横向不对称性在测试阶段之间没有增加。老年受试者与一组听力正常的年轻受试者的比较表明，在70至90岁的生活中，言语理解措施的下降相对于听力测量的下降显着加速。假设语音理解线性依赖于年龄和听力变量，有证据表明，这种线性关系随年龄的变化，这表明不仅准确性，而且语音理解的性质随着年龄的发展。
A group of 29 elderly subjects between 60.0 and 83.7 years of age at the beginning of the study, and whose hearing loss was not greater than moderate, was tested twice, an average of 5.27 years apart. The tests measured pure-tone thresholds, word recognition in quiet, and understanding of speech with various types of distortion (low-pass filtering, time compression) or interference (single speaker, babble noise, reverberation). Performance declined consistently and significantly between the two testing phases. In addition, the variability of speech understanding measures increased significantly between testing phases, though the variability of audiometric measurements did not. A right-ear superiority was observed but this lateral asymmetry did not increase between testing phases. Comparison of the elderly subjects with a group of young subjects with normal hearing shows that the decline of speech understanding measures accelerated significantly relative to the decline in audiometric measures in the seventh to ninth decades of life. On the assumption that speech understanding depends linearly on age and audiometric variables, there is evidence that this linear relationship changes with age, suggesting that not only the accuracy but also the nature of speech understanding evolves with age.