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Please wait while this Quicktime Movie (1-min 44-sec; 2.9 Mb) is loading (i.e., until the bar below the screen becomes completely dark gray). The movie requires a PC of at least 300 MHz. When loading is complete, click the play arrow on the lower left.
In this movie, a person with spinal cord injury (i.e., User A (Ref. 34)) 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 (Sect. 4.3.3, Fig. 4.1).
If the movie does not load and play properly, click the camera icon below. If the screen then appears but the movie does not start, click on the screen to play it. If you still have difficulty, contact Peter Brunner at:
pbrunner@wadsworth.org
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