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Friedrich EVC, McFarland DJ, Neuper C, Vaughan TM, Brunner P, Wolpaw J. A scanning protocol for a sensorimotor rhythm-based brain-computer interface. Biological psychology [Internet]. 2009;80:169?175. http://www.ncbi.nlm.nih.gov/pubmed/18786603

Nijboer F, Furdea A, Gunst I, Mellinger J, McFarland DJ, Birbaumer N, et al.. An auditory brain-computer interface (BCI). Journal of neuroscience methods [Internet]. 2008;167:43?50. http://www.ncbi.nlm.nih.gov/pubmed/17399797

Wolpaw J, McFarland DJ, Neat GW, Forneris CA. An EEG-based brain-computer interface for cursor control. Electroencephalography and clinical neurophysiology [Internet]. 1991;78:252?259. http://www.ncbi.nlm.nih.gov/pubmed/1707798