Methods The guinea pigs were exposed to experimental BUP and their hearing levels were evaluated with auditory brainstem response (ABR) and 40 Hz auditory event related potential (AERP).

• 方法豚鼠暴露于不同强度BUP之前和暴露后不同时间,检测听性脑干反应(ABR)和40Hz听觉相关电位(AERP)反应阈。