Circadian oscillations in rodents: a systematic increase of their frequency with age.
The circadian activity rhythms of golden hamsters and two species of deermouse, when released from a light-dark cycle of 12 hours light and 12 hours of darkness into constant darkness, had progressively shorter periods as the animals became older. A possible bearing of this fact on the aging process is briefly outlined.
D000375:Aging; D000818:Animals; D002940:Circadian Rhythm; D006224:Cricetinae; D012377:Rodentia / Q000502:physiology*