Design and operation of an EEG-based brain-computer interface with digital signal processing technology

  title={Design and operation of an EEG-based brain-computer interface with digital signal processing technology},
  author={Dennis J. McFarland and A. Todd Lefkowicz and Jonathan R. Wolpaw},
  journal={Behavior Research Methods, Instruments, \& Computers},
We are developing an electroencephalographic (EEG)-based brain-computer interface (BCI) system that could provide an alternative communication channel for those who are totally paralyzed or have other severe motor impairments. The essential features of this system are as follows: (1) EEG analysis in real time, (2) real-time conversion of that analysis into device control, and (3) appropriate adaptation to the EEG of each user. Digital signal processing technology provides the speed and… 
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An EEG-based mouse system by using brain-computer interface (BCI) to move a cursor on a computer display is designed to provide an alternative communication or control channel for patients with severe motor disabilities.


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An adaptive decoding device designed to develop and evaluate EEG- based communication from the device user to a computer and results illustrating successful EEG-based cursor control with this system are presented.
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Results indicate that the mu rhythm can be used to control graded cursor movement and are additional evidence that with further development it might provide a new means of communication and control for individuals with severe motor disabilities.