[Intradiurnal organization of the wakefulness-sleep cycle and energy metabolism in rats exposed to low ambient temperature].
Effects of low ambient temperature (+6 degrees C) on temporal sleep characteristics in cold--acclimated and control rats as well as the interaction between states of animals and energy metabolism levels, were studied. Control rats at low ambient temperature had a lighter, shorter and often interrupted sleep. Cold--acclimated rats slept as much as the control ones at moderate ambient temperature (+19 degrees C) although their sleep, too, was light and intermittent. At both ambient temperatures total and slow--wave sleep was highly correlated with reduction of oxygen consumption in both control and cold--acclimated rats. The maximal decrease of oxygen consumption during sleep as compared with wakefulness occurred in cold--acclimated rats at +6 degrees C. The data obtained are discussed in respect to potential energy connection with sleep.
D000222:Adaptation, Physiological; D000818:Animals; D002940:Circadian Rhythm; D003080:Cold Temperature; D004569:Electroencephalography; D004734:Energy Metabolism; D008297:Male; D010101:Oxygen Consumption; D051381:Rats; D012890:Sleep / Q000502:physiology*; D013997:Time Factors; D014851:Wakefulness / Q000502:physiology*
Vnutrisutochnaia organizatsiia tsikla "bodrstvovanie-son" i énergeticheskiĭ metabolizm u krys pri deĭstvii nizkoĭ temperatury sredy.