Choosing parameters for the analysis of synchronization of the autonomic regulatory contours of blood circulation in newborns

In this paper, we studied the features of the autonomic regulatory system of the heart rate and the tone of the arteries in newborns. During the experiment, we obtained 15 records of synchronous electrocardiograms and photoplethysmograms of newborns. A spectral analysis was conducted, the results of which revealed a number of features, including the presence of an LF peak at a lower frequency than is common in adult subjects. Based on these results, we have chosen new parameters to assess the degree of synchronization of the autonomic regulatory contours of the blood circulation in newborns, which contribute to the greater significance of the results.