With the development of social economic and technology,Cochlear Implantation has became an ef-fective therapy for patients who suffered from severe or profound hearing impairment.In the meantime,patients'demands for sound and auditory quality are also increasing.In terms of speech recognition,localization,and audi-tory quality,bilateral hearing is closer to the auditory experience of normal individuals,so bilateral cochlear im-plantation(BCI)emerged as the times require.In this article,we will introduce the status and progress of bimodal regarding to the following aspects:the brief history,the advantages of BCI,different methods for BCI,and the problems encountered in BCI.
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