The study of the response of postural stimuli in relation to heart rate and skin conductance in the nonlinear domain Online publication date: Wed, 29-May-2024
by Ankita Soni; Kirti Rawal; Tushar Tyagi
International Journal of Biomedical Engineering and Technology (IJBET), Vol. 45, No. 2, 2024
Abstract: This study examines the relationship between skin conductance response (SCR) and heart rate variability (HRV) as well as the impact of postural provocation on the autonomic nervous system. The HRV and SCR were examined in this study using the self-recorded dataset of 45 subjects in supine and standing body positions. Nonlinear methods have been applied to the recorded data set in order to ascertain the impact of postural shifts on the recorded signals. For the statistical analysis of the value of nonlinear parameters, Spearman rank correlation and pair t-test have been used to validate the nonlinear features of the applied nonlinear methods. From the results, it has been found that the HRV decreases in the body's standing posture while SCR increases in this position. This implies that in the standing position, sympathetic activity increases while parasympathetic activity decreases, as shown by a decrease in HRV and an increase in SCR.
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