Persistent meal-associated rhythms in SCN-lesioned rats.
An experiment was conducted to determine whether meal-associated rhythms could be demonstrated to persist in SCN-lesioned rats. A previously used paradigm in which periods of deprivation were alternated with ad lib food availability was used. Evidence for persistent wheel-running and drinking rhythms was observed in SCN-lesioned rats. It was concluded that meal-associated rhythms are associated with an endogenous oscillator distinct from the SCN and that it may not entirely subservient to the SCN-based oscillator in intact rats.
D000818:Animals; D001931:Brain Mapping; D002940:Circadian Rhythm; D004327:Drinking Behavior / Q000502:physiology*; D005247:Feeding Behavior / Q000502:physiology*; D005508:Food Deprivation / Q000502:physiology; D008297:Male; D009043:Motor Activity / Q000502:physiology*; D051381:Rats; D013493:Suprachiasmatic Nucleus / Q000502:physiology*