BCI (Brain-Computer Interface) focuses on the study of the establishment of a communication channel between brain and outside instrument through which information transmission takes place. The technology made its beginning in the 1990s and has become a hot research topic after 2000. BCI covers many fields, such as biology, medicine, computer and communication. It is an interdisciplinary research orientation. With the development of BCI, animal soldiers and insect soldiers have appeared one after another. So...