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Objective: Spectral entropy has been applied in variety of fields. Multiscale spectral entropy (MSSE) has also recently been proposed to take into account structures on several scales. However, MSSE has some drawbacks, such as the coarse-graining procedure performed in the time domain. In this study, we propose a new framework to compute MSSE. This framework is also adapted for nonstationary data...
Heart rate asymmetry is caused by an unequal contribution of heart rate decelerations and accelerations to the heart rate variability, structure and complexity. Here we show that the variability of different haemodynamic parameters such as stroke volume (SV), cardiac output (CO) and systemic vascular resistance (SVR) has asymmetrical properties. For this purpose we used 30-minute cardiac impedance...
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