| Nonlinear Dynamics, Psychology, and Life Sciences, Vol. 12, Iss. 4, Oct, 2008, pp. 359-369 @2008 Society for Chaos Theory in Psychology & Life Sciences Nonlinear Dynamical Modeling in ECG Analysis: A Heuristic Guideline Abstract: We highlight some of the pitfalls involved in the analysis of
electrocardiogram data (ECG) when the correlation dimension (CD)
estimates are used to discriminate between various states of the
human heart or to distinguish healthy dynamics from different types
of arrhythmia. It is argued that due to the PQRST complex, high
autocorrelation and/or short data sets, the CD estimates would be
distorted when continuously sampled ECG voltage data are used instead
of beat-to-beat (RR) interval series. Keywords: cardiology, chaos, correlation dimension, electrocardiogram, low dimensional attractor |