Changes in sleep cycle patterns with age.
D000293:Adolescent; D000328:Adult; D000368:Aged; D000375:Aging; D002648:Child; D002675:Child, Preschool; D004569:Electroencephalography; D005133:Eye Movements; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011582:Psychological Theory; D012890:Sleep; D012894:Sleep Stages; D012895:Sleep, REM; D013997:Time Factors; D014851:Wakefulness