Circadian pacemaker does not arrest in deep hibernation. Evidence for desynchronization from the light cycle.
A freerunning rhythm of locomotor activity was observed between hibernation bouts in Turkish hamsters (mesocricetus brandti) kept in 10L:14D light-dark cycles at 10 +/- 1 degree C. The data further indicate an influence of natural hypothermia upon the circadian system and its ability to entrain to light-dark cycles.
D000818:Animals; D001831:Body Temperature; D002940:Circadian Rhythm / Q000528:radiation effects*; D006224:Cricetinae / Q000502:physiology*; D005260:Female; D006605:Hibernation; D008027:Light; D008297:Male; D008647:Mesocricetus / Q000502:physiology*; D009043:Motor Activity / Q000502:physiology; D010507:Periodicity