Individual differences in ability to use EMG-derived feedback

Evidence shows statistically reliable individual differences among unimpaired subjects in ability to use visual representation of electromyographic voltages. The visual information was displayed as a cursor in a tracking situation. The cursor was then blanked, with subjects being required to place the now invisible cursor over a target. Test-retest correlational significance is demonstrated. The rationale for using visual guidance in rehabilitating stroke victims suffering from loss in motor feedback receives support.