Current Status and Trend of Asynchronous Brain-computer Interface

The appearance of brain-computer interface(BCI) provides a new communication and control pathway for people.Because of its closeness to people′s daily life,asynchronous BCI is becoming a new hot spot after synchronous BCI.In this article the current status,key technologies and new development of BCI research were reviewed in detail;possible directions in future asynchronous BCI research were discussed as well.