Influence of long-lasting stress on the regulation of rats’ heart rate

Abstract

The influence of long-lasting stress on rats’ heart rate variability, which reflects its regulation features, was estimated using electrocardiography data. The indices of correlation rhythmogram and variation pulsogram were analyzed in control and stressed animals. It was discovered that changes of studied indices depended on the duration of stress influence and could correspond to the different stages of stress-reaction of an organism.