论文部分内容阅读
本文研究了10名受试者在密闭环境条件下听觉功能的变化。环境因素包括噪声、温度、湿度、脑力负荷和某些微量气体成分。受试者的听阈偏移在实验期15—30天后即趋于稳定,在实验终止后15天恢复到原有水平。最大听阈偏移为20—40分贝,主要频率为1000—4000赫,与噪声频谱一致。在实验期90天最大清晰度值下降10％,可懂度阈增高7分贝。音调辨别阈在60—90天持续升高。刺激后疲劳测定表明,尽管实验后15天听阈已恢复,但听觉系统的疲劳状态仍然存在。文中讨论了听觉分析器外周和中枢部分的变化与噪声等环境因素的关系。
This study examined the changes in auditory function of 10 subjects under confined environmental conditions. Environmental factors include noise, temperature, humidity, mental load and some trace gas composition. Subjects’ hearing thresholds tended to stabilize 15-30 days after the experiment and returned to their original level 15 days after the experiment was terminated. The maximum threshold shift is 20-40 dB and the main frequency is 1000-4000 Hz, consistent with the noise spectrum. 90 days in the experimental maximum sharpness value decreased by 10%, intelligibility threshold increased by 7 dB. Tone discrimination threshold continues to rise 60-90 days. Post-stimulation fatigue testing showed that although the threshold was restored 15 days after the experiment, the hearing system’s fatigue status still exists. The paper discusses the auditory analyzer peripheral and central part of the changes and noise and other environmental factors.