Stochastic Nonlinear Dynamics Of The Cardiovascular System
Author(s)
P.V.E. McClintock & A Stefanovska
Abstract
Stochastic nonlinear dynamics of the
cardiovascular system
P.V.E. ~ c ~ l i n t o c k ' & A. stefanovska2>'
' ~ e ~ a r t m e n t of Physics, Lancaster University, Lancaster, UK.
2 Group of Nonlinear Dynamics and Synergetics, Faculty of Electrical
Engineering, University of Ljubljana, Triaika, Slovenia.
Abstract
The human cardiovascular system (CVS) is a highly complex mechanism. Signals
derived from it are difficult to analyse because they are time-varying, noisy,
and of necessarily limited duration. The application of techniques drawn from nonlinear
science has, however, yielded many insights into the nature of the CVS, and
has provided strong evidence for a large degree of determinism in the way it functions.
Yet there is compelling evidence that random fluctuations (noise) also play
an important role. The extent to which the CVS can be modelled as a stochastic
nonlinear dynamical system is reviewed, and future research and possible applications
based on this perception are discussed.
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