AN ALTERNATIVE MODEL OF HUMAN AUDITORY FATIGUE

外耳在暂时性阈移（TTS）中的作用已被证实。 对13名听力正常的成年人进行了定量研究。 的 实验旨在研究量与 由外耳提供的鼓膜处的声压增益， 结果TTS。 前提是TTS幅度的变化可以 预测的已知变化的声压级冲击在 耳膜。 根据对疲劳刺激进行调整时所做的TTS测量， 声场和测量外耳压力增益，显示 TTS的平均幅度在预测的1dB以内， 在鼓膜处调整疲劳剂。 之间的标准差 处理水平没有显著差异。

The role of the external ear in temporary threshold shift (TTS) has been studied quantitatively in 13 normal hearing human adult subjects. The experiment is designed to investigate the relationship between the amount of acoustic pressure gain at the eardrum provided by the external ear and resulting TTS. The premise is that changes in magnitude of TTS can be predicted by known changes in sound pressure level impinging upon the eardrum. Based upon TTS measures made when the fatiguing stimulus was adjusted in the sound field and measures of outer ear pressure gain, it was shown that the mean magnitude of TTS was within 1 dB of that predicted when the fatiguer was adjusted at the eardrum. The standard deviations between the treatment levels were not significantly different.