[Stages of consciousness in sleep].
D000293:Adolescent; D000328:Adult; D003243:Consciousness; D004827:Epilepsy; D005260:Female; D006212:Hallucinations; D006801:Humans; D008297:Male; D008875:Middle Aged; D009290:Narcolepsy; D012559:Schizophrenia; D012890:Sleep; D012894:Sleep Stages