[Dynamics of cardiac rhythm in hypobiosis in the frog Rana temporaria].
Employing distant recording technique of the heart rate and motor activity in hypobiotic frogs, studies have been made of temporal characteristic of the diurnal dependence of the heart rate on natural diurnal behavioural periodicity. It was shown that during natural reversible hypobiosis, the circadian rhythm of the heart rate is preserved, being destroyed during irreversible hypobiosis. Typical patterns are presented of the circadian dynamics of the heart rate with a specific variation in R-R intervals of the ECG during reversible and irreversible hypobiosis. A discussion is made of the importance of preservation of self-regulating mechanisms during hypobiosis, these mechanisms accounting for maintenance of a certain level of the activity in hypobiotic organism.
D000818:Animals; D002940:Circadian Rhythm; D004562:Electrocardiography; D006339:Heart Rate; D006605:Hibernation; D011896:Rana temporaria / Q000502:physiology*; D012621:Seasons; D013696:Temperature
Dinamika serdechnogo ritma pri gipobioze liagushki Rana temporaria.