Chen T J, Chen S S, Hsieh P Y, Chiang H C
Department of Physiology, Institute of Public Health, Kaohsiung Medical College, Taiwan, Republic of China.
Arch Environ Health. 1997 Jan-Feb;52(1):45-50. doi: 10.1080/00039899709603799.
Two groups of randomly chosen individuals who lived in two communities located different distances from the airport were studied. We monitored audiometry and brainstem auditory-evoked potentials to evaluate cochlear and retrocochlear functions in the individuals studied. The results of audiometry measurements indicated that hearing ability was reduced significantly in individuals who lived near the airport and who were exposed frequently to aircraft noise. Values of pure-tone average, high pure-tone average, and threshold at 4 kHz were all higher in individuals who lived near the airport, compared with those who lived farther away. With respect to brainstem auditory-evoked potentials, latencies between the two groups were not consistently different; however, the abnormality rate of such potentials was significantly higher in volunteers who lived near the airport, compared with less-exposed counterparts. In addition, a positive correlation was found between brainstem auditory-evoked potential latency and behavioral hearing threshold of high-frequency tone in exposed volunteers. We not only confirmed that damage to the peripheral cochlear organs occurred in individuals exposed frequently to aircraft noise, but we demonstrated involvement of the central auditory pathway.
对两组随机选取的个体进行了研究，这些个体生活在距离机场不同距离的两个社区。我们监测了听力测定和脑干听觉诱发电位，以评估所研究个体的耳蜗和蜗后功能。听力测定结果表明，居住在机场附近且经常暴露于飞机噪音中的个体听力能力显著下降。与居住在较远地区的个体相比，居住在机场附近的个体的纯音平均听阈、高频率纯音平均听阈和4kHz处的听阈均更高。关于脑干听觉诱发电位，两组之间的潜伏期并非始终存在差异；然而，与暴露较少的志愿者相比，居住在机场附近的志愿者的此类电位异常率显著更高。此外，在暴露的志愿者中，发现脑干听觉诱发电位潜伏期与高频音行为听阈之间存在正相关。我们不仅证实了经常暴露于飞机噪音中的个体的外周耳蜗器官受到了损伤，而且还证明了中枢听觉通路也受到了影响。
