THE CONCURRENCE OF FINE MUSCLE ACTIVITY AND RAPID EYE MOVEMENTS DURING SLEEP.

Body movements were detected by means of highly sensitive semiconductor strain gauges on 10 subjects who slept overnight in a dream laboratory. Continuous measurement of movement from the eye, throat, hand, and foot indicated that activation was an integrated process which appears simultaneously from all locations. Correlations of level of eye movement activity and average activity level from other points measured ranged between .55 and .85 for each of 10 subjects, with the majority exceeding .75. Body movement patterns correctly identified 32 of 41 peats of eye movement activity.