Changes in the respiratory cycle associated with sleep.
D000818:Animals; D002415:Cats; D010991:Plethysmography; D012018:Reflex; D012119:Respiration; D012890:Sleep / Q000502:physiology*; D012895:Sleep, REM / Q000502:physiology; D013990:Tidal Volume; D013997:Time Factors; D014628:Vagotomy; D014630:Vagus Nerve / Q000502:physiology