Penner M J, Brauth S, Hood L
J Speech Hear Res. 1981 Jun;24(2):257-61. doi: 10.1044/jshr.2402.257.
For patients with tinnitus and sensorineural hearing loss, the intensity of broad-band noise required to mask the tinnitus increases by as much as 45 dB during a 30-minute period if the patient is exposed to noise. In contrast, the intensity required to mask an external tone remains nearly constant. Some speculations which might account for this result are offered. Excess neural activity is posited to be the physiological determinant of tinnitus and to be central, generated in the brainstem postsynaptic to the eighth nerve.
对于患有耳鸣和感音神经性听力损失的患者，如果暴露于噪声环境中，在30分钟内掩盖耳鸣所需的宽带噪声强度会增加多达45分贝。相比之下，掩盖外部音调所需的强度几乎保持不变。文中提出了一些可能解释这一结果的推测。过多的神经活动被认为是耳鸣的生理决定因素，且是中枢性的，产生于第八对脑神经脑干突触后。
