title: Sleep EEG after daily torpor in the Djungarian hamster: similarity to the effect of sleep deprivation.
abstract: Sleep, daily torpor and hibernation are considered to be homologous processes. However, during periodic arousals from hibernation, ground squirrels spent most of the euthermic period in non-REM sleep. Therefore, it has been proposed that animals arouse regularly from hibernation to recover from a sleep deprivation (SD) incurred during hibernation. We demonstrate in the Djungarian hamster that EEG slow-wave activity (EEG power density in the 0.75-4-Hz range), which is increased after SD, is enhanced in a similar way after an episode of daily torpor. The results support the hypothesis that daily torpor is incompatible with the restorative function of sleep.
authors.affiliation: Institute of Pharmacology, University of Zürich, Switzerland.
authors.forename: T
authors.initials: T
authors.lastname: Deboer
authors.forename: I
authors.initials: I
authors.lastname: Tobler
mesh_terms: D000818:Animals; D001143:Arousal / Q000502:physiology; D006224:Cricetinae; D004569:Electroencephalography; D006605:Hibernation / Q000502:physiology; D008297:Male; D017111:Phodopus; D012890:Sleep / Q000502:physiology*; D012892:Sleep Deprivation / Q000502:physiology*