Method:Put 6 samples into 2 different groups:CI &HA(cochlea implant and hearing aid meanwhile) group and CI(cochlea implant only)group. Test the latent periods of P300,N200,N100,and the amplitude of P300, which are the main parts of ERP.

• 方法分别在同时使用人工耳蜗和助听器(CI &HA)及单独使用人工耳蜗(CI)两种状态下测定ERP的主要成分P300、N200和N100的潜伏期及P300振幅。