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Noise and determinism in cardiovascular dynamics.

Research output: Contribution to journalJournal article


Journal publication date1/11/2002
JournalPhysica A: Statistical Mechanics and its Applications
Number of pages8
Original languageEnglish


Signals derived from the human cardiovascular system are well known to exhibit highly complex, nearly periodic, oscillatory behaviour whose nature is something of an enigma. It has, for example, been variously described as chaotic, fractal, stochastic, and subject to 1/f fluctuations — and its true nature is still the subject of vigorous debate. We review and describe some recent experiments that illuminate the problem and discuss a combination of noise and almost periodic frequency modulation as a signature of the system dynamics.