Posture entrainment as a test for autonomic function in health and disease

Estimation of power spectra and coherence of heart rate variability signal (HRV) as well as respiration and peripheral blood flow (PBF) signals for normal subjects and diabetes using posture entrainment (standing position) are presented. Comparison of power and coherence spectra between each group leads to indices which may be helpful in the quantification of autonomic assessment of autonomic nervous system in health and disease.