title: Polygraphic study on the nocturnal sleep of children with Down's syndrome and endogenous mental retardation.
mesh_terms: D000293:Adolescent; D002648:Child; D004314:Down Syndrome / Q000503:physiopathology*; D004569:Electroencephalography; D004576:Electromyography; D005133:Eye Movements; D005260:Female; D006801:Humans; D008607:Intellectual Disability / Q000503:physiopathology*; D008297:Male; D009068:Movement; D012890:Sleep; D012894:Sleep Stages; D012895:Sleep, REM