title: [Changes of heart rate variability during sleep due to aging].
authors.affiliation: National Institute of Occupational Safety and Health, Japan.
authors.forename: Tatsuo
authors.initials: T
authors.lastname: Oka
authors.forename: Hideki
authors.initials: H
authors.lastname: Fukuda
authors.forename: Mamoru
authors.initials: M
authors.lastname: Hirata
authors.forename: Shinichi
authors.initials: S
authors.lastname: Sawada
mesh_terms: D000328:Adult; D000368:Aged; D000375:Aging / Q000502:physiology*; D001341:Autonomic Nervous System / Q000502:physiology; D005260:Female; D006339:Heart Rate / Q000502:physiology*; D006801:Humans; D008297:Male; D008875:Middle Aged; D012737:Sex Factors; D012890:Sleep / Q000502:physiology*; D012895:Sleep, REM / Q000502:physiology