title: Some observations on the reliability of REM variables.
mesh_terms: D000293:Adolescent; D000328:Adult; D000367:Age Factors; D002940:Circadian Rhythm; D004569:Electroencephalography; D005260:Female; D006801:Humans; D008297:Male; D012890:Sleep; D012895:Sleep, REM; D013997:Time Factors