Circadian pacemaker does not arrest in deep hibernation. Evidence for desynchronization from the light cycle

Experientia. 1987 Mar 15;43(3):293-4. doi: 10.1007/BF01945554.

Abstract

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.

MeSH terms

  • Animals
  • Body Temperature
  • Circadian Rhythm / radiation effects*
  • Cricetinae / physiology*
  • Female
  • Hibernation*
  • Light*
  • Male
  • Mesocricetus / physiology*
  • Motor Activity / physiology
  • Periodicity*