Shibagaki, M Heart-rate variability during nocturnal sleep in mentally retarded children. [electronic resource] - Perceptual and motor skills Dec 2001 - 785-96 p. digital Publication Type: Journal Article ISSN: 0031-5125 Standard No.: 10.2466/pms.2001.93.3.785 doi Subjects--Topical Terms: AdolescentArousal--physiologyCerebral Cortex--physiopathologyChildChild, PreschoolFemaleHeart Rate--physiologyHumansInfantIntellectual Disability--physiopathologyMaleParasympathetic Nervous System--physiopathologyPolysomnographyReference ValuesSleep Stages--physiologySleep, REM--physiology