title: The sleep-dream cycle: A neurobiological rhythm.
mesh_terms: D000818:Animals; D001522:Behavior, Animal / Q000502:physiology; D001683:Biological Clocks; D002415:Cats; D002490:Central Nervous System / Q000502:physiology; D002940:Circadian Rhythm; D004325:Dreams / Q000502:physiology*; D005260:Female; D006801:Humans; D008297:Male; D008433:Mathematics; D008954:Models, Biological; D010507:Periodicity; D012890:Sleep / Q000502:physiology*; D012908:Snails / Q000502:physiology