Cluster analysis of extracardiac control of the heart rate in random-bred albino rats at rest.
Heart rate variability was examined in random-bred albino rats at rest. The rats were clusterized according to activity of autonomic contour of heart rate control. Combination of factor and cluster analyses enhanced informative value of spectrum parameters of the heart rate variability in nonlinear rats grouped by initial neurovegetative status. The contours of central and autonomic regulation describe the most general features of the control influences that realize modulating influences at the heart level via sympathetic and parasympathetic control pathways. Their activity is comprehensively assessed by the normalized power spectrum of variations in the heart rate.
Kur'yanova
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EV
Department of Human and Animal Physiology, Astrakhan State University, Russia. fyzevk@rambler.ru
Teplyi
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DL
Savin
V F
VF
D000818:Animals; D016000:Cluster Analysis; D004562:Electrocardiography; D005260:Female; D006339:Heart Rate; D008297:Male; D051381:Rats