title: An ultradian biologic rhythm associated with perceptual deprivation and REM sleep.
mesh_terms: D000339:Affect; D002940:Circadian Rhythm; D003201:Computers; D004569:Electroencephalography; D006339:Heart Rate; D006801:Humans; D008297:Male; D009043:Motor Activity; D010507:Periodicity; D011930:Reaction Time; D012683:Sensory Deprivation; D012892:Sleep Deprivation; D012895:Sleep, REM; D013223:Statistics as Topic; D013404:Suggestion; D014851:Wakefulness