Samelli Alessandra G, Matas Carla G, Carvallo Renata M M, Gomes Raquel F, de Beija Carolina S, Magliaro Fernanda C L, Rabelo Camila M
Department of Physical Therapy, School of Medicine, University of São Paulo, SP, Brazil.
Noise Health. 2012 Jan-Feb;14(56):6-12. doi: 10.4103/1463-1741.93314.
In the present study, we evaluated peripheral and central auditory pathways in professional musicians (with and without hearing loss) compared to non-musicians. The goal was to verify if music exposure could affect auditory pathways as a whole. This is a prospective study that compared the results obtained between three groups (musicians with and without hearing loss and non-musicians). Thirty-two male individuals participated and they were assessed by: Immittance measurements, pure-tone air conduction thresholds at all frequencies from 0.25 to 20 kHz, Transient Evoked Otoacoustic Emissions, Auditory Brainstem Response (ABR), and Cognitive Potential. The musicians showed worse hearing thresholds in both conventional and high frequency audiometry when compared to the non-musicians; the mean amplitude of Transient Evoked Otoacoustic Emissions was smaller in the musicians group, but the mean latencies of Auditory Brainstem Response and Cognitive Potential were diminished in the musicians when compared to the non-musicians. Our findings suggest that the population of musicians is at risk for developing music-induced hearing loss. However, the electrophysiological evaluation showed that latency waves of ABR and P300 were diminished in musicians, which may suggest that the auditory training to which these musicians are exposed acts as a facilitator of the acoustic signal transmission to the cortex.
在本研究中，我们评估了职业音乐家（有听力损失和无听力损失）与非音乐家相比的外周和中枢听觉通路。目的是验证音乐暴露是否会对整个听觉通路产生影响。这是一项前瞻性研究，比较了三组（有听力损失和无听力损失的音乐家以及非音乐家）之间获得的结果。32名男性个体参与了研究，他们接受了以下评估：声导抗测量、0.25至20kHz所有频率的纯音气导阈值、瞬态诱发耳声发射、听性脑干反应（ABR）和认知电位。与非音乐家相比，音乐家在传统和高频听力测定中表现出更差的听力阈值；音乐家组瞬态诱发耳声发射的平均幅度较小，但与非音乐家相比，音乐家的听性脑干反应和认知电位的平均潜伏期缩短。我们的研究结果表明，音乐家群体有患音乐性听力损失的风险。然而，电生理评估显示，音乐家的ABR和P300潜伏期波缩短，这可能表明这些音乐家接受的听觉训练促进了声信号向皮层的传递。
