A brain computer interface (BCI) feedback system based on virtual reality was designed for trainning testers to adjust their status, and result in the product of EEG signals adapted to recognition algorithm. BCI technology and virtual reality (VR) technology were combined in the system. Firstly, the virtual human models were built in 3DMAX. And then the designed actions were added to role models in VR. Finally the system called the database in real time to command role models. Simulation results showed that a man tester could compare his own imagine movements with feedback actions in real time, and adjust himself timely to achieve consistency of feedback actions and imagination. Research results preliminary prove the feasibility of the feedback system, and present a good example for the design of BCI feedback system.
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