Observation of a period doubling bifurcation during onset of human ventricular fibrillation

Michael Small, Dejin Yu, Robert G. Harrison

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

We find evidence of a period doubling bifurcation and transition from pseudo-periodic chaos to a stable limit cycle during onset of ventricular fibrillation (VF) in humans. Novel radial basis modeling techniques are applied to time series of spontaneous VF to estimate time dependent changes in the dynamics. Furthermore, we show that the spectral power content may be used as a surrogate for the underlying bifurcation parameter. With this spectral power measure we demonstrate a characteristic transition from pseudo-periodic chaos to a second pseudo-periodic chaotic regime. The methods described in this paper are generic and applicable to any time series data.

Original languageEnglish
Pages (from-to)743-754
Number of pages12
JournalInternational Journal of Bifurcation and Chaos
Volume13
Issue number3
DOIs
Publication statusPublished - Mar 2003

Keywords

  • Period doubling
  • Radial basis modeling
  • Ventricular fibrillation

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