title: [Circadian fluctuations in the indices of the cardiac intervalogram and their relation to the characteristics of circadian mobility in rats].
abstract: Mathematical analysis of the heart rate variability enables one to determine the activity of the sympathetic nervous system at different time of day in rats. A correlation was found between the cardiac intervalogram parameters and the dynamics of rats' circadian motility. Intensification of locomotor activity by day was accompanied by an increase in the sympathetic tone.
authors.forename: E V
authors.initials: EV
authors.lastname: Beĭer
authors.forename: A E
authors.initials: AE
authors.lastname: Arushanian
authors.forename: E V
authors.initials: EV
authors.lastname: Kolodiĭchuk
authors.forename: E B
authors.initials: EB
authors.lastname: Arushanian
mesh_terms: D000818:Animals; D002940:Circadian Rhythm / Q000502:physiology*; D004562:Electrocardiography / Q000379:methods; D005260:Female; D006339:Heart Rate / Q000502:physiology*; D008297:Male; D009043:Motor Activity / Q000502:physiology*; D017440:Photoperiod; D051381:Rats; D018709:Statistics, Nonparametric