Deterministic Chaos in Blood Pressure Signals During Different Physiological Conditions


Kinnane, Oliver P. and Ringwood, John and Ramchandra, Rohit and Barrett, Carolyn J. and Guild, Sarah-Jane and Leonard, Bridget L. and Malpas, Simon C. (2003) Deterministic Chaos in Blood Pressure Signals During Different Physiological Conditions. Modelling and Control in Biomedical Systems, Proceedings of 5th IFAC Symposium, Melbourne, Australia, August 21-23 2003.

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Abstract

Several coupled and nonlinear controlling mechanisms are involved in the regulation of blood pressure. The possible presence of chaos in physiological signals has been the subject of some research. In this study, blood pressure signals were analysed using a range of nonlinear time series analysis techniques. Individual effectors of blood pressure were either experimentally removed or enhanced, so that the controlling mechanisms that are responsible for the chaotic nature of the signals may be identified by chaotic analysis of the signals. The level of chaos varied across the different experimental conditions, showing a distinct decrease from control conditions to all other experimental conditions.

Item Type: Article
Keywords: Biomedical systems; Chaos theory; Lyapunov; Pressure; Nonlinear analysis;
Academic Unit: Faculty of Science and Engineering > Electronic Engineering
Item ID: 1972
Depositing User: Professor John Ringwood
Date Deposited: 02 Jun 2010 15:44
Journal or Publication Title: Modelling and Control in Biomedical Systems, Proceedings of 5th IFAC Symposium, Melbourne, Australia, August 21-23 2003
Publisher: International Federation of Automatic Control
Refereed: Yes
URI:

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