Dawes Piers, Munro Kevin J, Kalluri Sridhar, Edwards Brent
School of Psychological Sciences, University of Manchester, Manchester M13 9PL, United Kingdom.
Starkey Hearing Research Center, Berkeley, California 94704-1362.
J Acoust Soc Am. 2014 Jun;135(6):3560-9. doi: 10.1121/1.4874629.
The aim of this study was to investigate changes in central auditory processing following unilateral and bilateral hearing aid fitting using a combination of physiological and behavioral measures: late auditory event-related potentials (ERPs) and speech recognition in noise, respectively. The hypothesis was that for fitted ears, the ERP amplitude would increase over time following hearing aid fitting in parallel with improvement in aided speech recognition. The N1 and P2 ERPs were recorded to 500 and 3000 Hz tones presented at 65, 75, and 85 dB sound pressure level to either the left or right ear. New unilateral and new bilateral hearing aid users were tested at the time of first fitting and after 12 weeks hearing aid use. A control group of long-term hearing aid users was tested over the same time frame. No significant changes in the ERP were observed for any group. There was a statistically significant 2% improvement in aided speech recognition over time for all groups, although this was consistent with a general test-retest effect. This study does not support the existence of an acclimatization effect observable in late ERPs following 12 weeks' hearing aid use.
本研究的目的是使用生理和行为测量方法相结合，即分别使用晚期听觉事件相关电位（ERP）和噪声中的言语识别，来研究单侧和双侧佩戴助听器后中枢听觉处理的变化。假设是对于佩戴助听器的耳朵，助听器佩戴后ERP波幅会随着时间增加，同时助听言语识别能力得到改善。记录了左耳或右耳在65、75和85分贝声压级下呈现的500和3000赫兹纯音诱发的N1和P2 ERP。新的单侧和双侧助听器使用者在首次佩戴时以及佩戴助听器12周后接受测试。一组长期佩戴助听器的使用者在相同时间范围内接受测试。所有组的ERP均未观察到显著变化。所有组的助听言语识别能力随时间有统计学上显著的2%的改善，尽管这与一般的重测效应一致。本研究不支持在佩戴助听器12周后晚期ERP中可观察到适应效应的存在。
