Synchronization of low-frequency oscillations in the human cardiovascular system.
We investigate synchronization between the low-frequency oscillations of heart rate and blood pressure having in humans a basic frequency close to 0.1 Hz. A method is proposed for quantitative estimation of synchronization between these oscillating processes based on calculation of relative time of phase synchronization of oscillations. It is shown that healthy subjects exhibit on average substantially longer epochs of internal synchronization between the low-frequency oscillations in heart rate and blood pressure than patients after acute myocardial infarction.
Department of Nano- and Biomedical Technologies, Saratov State University, Saratov, Russia.
A S
AS
Karavaev
M D
MD
Prokhorov
V I
VI
Ponomarenko
A R
AR
Kiselev
V I
VI
Gridnev
E I
EI
Ruban
B P
BP
Bezruchko
D000465:Algorithms; D001683:Biological Clocks / Q000502:physiology*; D001794:Blood Pressure / Q000502:physiology*; D003198:Computer Simulation; D006339:Heart Rate / Q000502:physiology*; D006801:Humans; D008955:Models, Cardiovascular; D017711:Nonlinear Dynamics; D009991:Oscillometry / Q000379:methods*