Two-Dimensional Cursor Control Using EEG

J.R. Wolpaw D.J. McFarland Brain-Computer Interface R&D Program Wadsworth Center, Albany, New York PNAS, 101(51): 17849-17854, 2004 In this movie, a person with spinal cord injury uses scalp-recorded sensorimotor rhythms to control cursor movement in two dimensions. In each trial, a target appears at one of 8 possible locations on the periphery of the screen and one second later the cursor appears in the center and moves with its vertical movement controlled by the sum of the weighted amplitudes of a 24-Hz beta rhythm recorded from the scalp over left and right sensorimotor cortices and its horizontal movement controlled by the difference between the weighted amplitudes of a 12-Hz mu rhythm recorded over left and right sensorimotor cortices. This movie is in real-time. The BCI system shown in this video is BCI2000. BCI2000 is a general-purpose system for brain-computer interface (BCI) research. It can also be used for data acquisition, stimulus presentation, and brain monitoring applications. The mission of the BCI2000 project is to facilitate research and applications in these areas. See http://www.bci2000.org