NDLI: EEG-based communication and control: short-term role of feedback

Content Provider	IEEE Xplore Digital Library
Author	McFarland, D.J. McCane, L.M. Wolpaw, J.R.
Copyright Year	1993
Abstract	When people learn to control the amplitudes of certain electroencephalogram (EEG) components (e.g., the 8-12 Hz /spl mu/-rhythm over sensorimotor cortex) and use them to move a cursor to a target on a video screen, feedback about performance is normally provided by cursor movement and by trial outcome (i.e., success or failure). The authors assessed the short-term effects of this feedback on EEG control. After subjects received initial training with feedback present, feedback was removed intermittently for periods of several minutes. Subjects still displayed EEG control when feedback was removed. Removal of cursor movement alone appeared to have effects comparable to removal of both cursor movement and trial outcome. These results show that, in the short-term at least, /spl mu/-rhythm control is not dependent on the sensory input provided by cursor movement. They also suggest that feedback can have inhibitory as well as facilitatory effects on EEG control, and that these effects vary across subjects. This finding has implications for the design of training procedures.
Sponsorship	IEEE Computer Society
Starting Page	7
Ending Page	11
Page Count	5
File Size	99367
File Format	PDF
ISSN	10636528
Volume Number	6
Issue Number	1
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1998-03-01
Publisher Place	U.S.A.
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Communication system control Feedback Electroencephalography Frequency Prosthetics Control systems Scalp Medical control systems Rhythm Displays
Content Type	Text
Resource Type	Article
Subject	Engineering

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