Relation of cardiovascular oscillations under controlled respiration in humans

The human cardiovascular system is characterized by multi-level complex of regulatory structures with a large number of internal and external connections. In the functional aspect, the closest interaction is carried out between the cardiovascular and respiratory systems, where neurogenic regulatory mechanisms play an important role due to the activity of the sympathetic and parasympathetic parts of the autonomic nervous system. The aim of this work is to study the characteristics of rhythmic processes and their relationships in various parts of the cardiovascular system recorded using non-invasive methods (ECG, photoplethysmography and laser Doppler flowmetry). For signal processing, wavelet analysis is used.