Methods BC-ASSR to single and simultaneously multiple stimuli and PTA were examined in 28(56 ears ) young adults with normal hearing.

• 方法选取听力正常青年人28例(56耳)；进行骨导ASSR及纯音听阈测试；记录0.；5、1、2、4kHz单频刺激及多频刺激的BC-ASSR反应阈及纯音听阈；比较两种刺激方式所得结果。