Brain cooling across wake-sleep behavioral states in homeothermic species: an analysis of the underlying physiological mechanisms.
The behavioral state-dependent changes in the hypothalamic temperature of homeotherms reflect extracerebral adjustments in circulatory variables to influence the temperature and flow of the arterial blood cooling the brain. There are different mechanisms for brain cooling, i.e. systemic and selective brain cooling, which are affected by the changes in body posture and vasoconstrictor sympathetic outflow related to wake-sleep behavioral states.
Parmeggiani
P L
PL
Institute of Human Physiology, University of Bologna, Italy.
D000818:Animals; D001519:Behavior / Q000502:physiology*; D001522:Behavior, Animal; D001831:Body Temperature / Q000502:physiology*; D001833:Body Temperature Regulation; D001921:Brain / Q000502:physiology*; D006801:Humans; D012890:Sleep / Q000502:physiology*; D014851:Wakefulness / Q000502:physiology*