title: [Role of the paradoxical stage in the organization of the sleep--wakefulness cycle in rats].
abstract: In chronic experiments on rats, using the Jouvet technique, paradoxical sleep deprivation entailed disturbances in both the sleep cycle and the mechanism for regulation of the circadian sleep--wakefulness cycle. The sleep cycle disturbances involved, in the first place, a considerable reduction of the paradoxical sleep, diminishing of the profound slow-wave sleep, and an increase in duration of the light slow-wave sleep. These shifts were clear on the 1st day of the deprivation and considerably reduced on the 2nd day due to an increasing rate of alternation of the sleep--wakefulness cycle's phases. The data obtained suggest a certain commonness of the mechanisms for control of the slow-wave and the paradoxical phases of sleep, as well as the great compensatory abilities of the organism at the paradoxical sleep deprivation.
mesh_terms: D000818:Animals; D001921:Brain / Q000502:physiology; D002940:Circadian Rhythm; D004562:Electrocardiography; D004569:Electroencephalography; D006321:Heart / Q000502:physiology; D051381:Rats; D012892:Sleep Deprivation; D012894:Sleep Stages / Q000502:physiology; D012895:Sleep, REM / Q000502:physiology*
vernacular_title: Rol' paradoksal'noĭ fazy v organizatsii tsikla bodrstvovanie--son u krys.