Detecting deterministic dynamics of cardiac rhythm

Under the acceptable hypothesis that cardiac rhythm is an approximately det erministic process with a small scale noise component, an available way is provided to construct a model that can reflect its prominent dynamics of th e deterministic component. When applied to the analysis of 19 heart rate da ta sets, three main findings are stated. The obtained model can reflect pro minent dynamics of the deterministic component of cardiac rhythm; cardiac c haos is stated in a reliable way; dynamical noise plays an important role i n the generation of complex cardiac rhythm.