EEG-based communication and control: short-term role of feedback
| Autor: | Dennis J. McFarland, Lynn M. McCane, Jonathan R. Wolpaw |
|---|---|
| Rok vydání: | 1998 |
| Předmět: |
Adult
Male medicine.medical_specialty Rhythm control Audiology Electroencephalography Quadriplegia Sensitivity and Specificity behavioral disciplines and activities Feedback medicine Humans Sensorimotor cortex Simulation Cerebral Cortex Paraplegia medicine.diagnostic_test Video screen Communication General Engineering Cursor (user interface) Middle Aged body regions Sensory input Initial training Female Psychology |
| Zdroj: | IEEE Transactions on Rehabilitation Engineering. 6:7-11 |
| ISSN: | 1063-6528 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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