Objective: to study characteristics of the wave amplitude of auditory brain stem response (ABR) before and after tinnitus masking in tinnitus patients.

目的：探讨耳鸣患者的听觉脑干电位(abr)变化特点，观察耳鸣掩蔽后abr变化规律。

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Objective To investigate the difference and relationship between auditory steady-state evoked response(ASSR threshold), auditory brain stem response(ABR threshold) and pure tone threshold.

目的研究听觉稳态诱发反应（ASSR）和听性脑干反应（ABR）阈与纯音听阈的差别和相关性。

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