EEG/EMG-based measures of sleep and waking. The use of implanted electroencephalograhpic (EEG) and electromyographic (EMG) electrodes allows reliable determination of sleep/wake states. back to Methods Department of Psychology 1202 West Johnson Street University of Wisconsin at Madison Madison, WI 53706-1696 © 2001 by the Board of Regents of the University of Wisconsin System. Last Revised: comments