title: Relation of circadian periodicity of locomotor activity to sleep and excitability.
mesh_terms: D000818:Animals; D002940:Circadian Rhythm; D004558:Electric Stimulation; D008029:Lighting; D008297:Male; D009043:Motor Activity / Q000502:physiology*; D051381:Rats; D012154:Reticular Formation / Q000502:physiology; D012890:Sleep / Q000502:physiology*; D014851:Wakefulness / Q000502:physiology*