title: Stage 4 sleep in schizophrenia.
mesh_terms: D000293:Adolescent; D000328:Adult; D001007:Anxiety; D004569:Electroencephalography; D005260:Female; D006801:Humans; D008297:Male; D012559:Schizophrenia / Q000503:physiopathology*; D012890:Sleep; D012894:Sleep Stages; D012895:Sleep, REM