Key result
The CZF method, based on chaos theory and fractal variance, provides a non-linear approach to estimating BaroReflex Sensitivity that avoids the approximations of traditional Fourier spectral analysis.
Observational (n=7)
A new method based on the CZF formulation was introduced to estimate BaroReflex Sensitivity and compared with standard Fourier spectral analysis.
Hypothesis-generating for chaos-based BRS metrics; leaves open integration into clinical practice pending outcome validation.
We introduce a new method to estimate BaroReflex Sensitivity (BRS) . The methodology, based on the CZF formulation, recently published (see Conte et al 2008), enables to evaluate simultaneous variability of RR and SBP and to estimate the coupling strength. The technique is applied to subjects (female and men with age ranging from 21 to 28 years old) and it is compared with the results that may be obtained by using the standard Fourier spectral analysis technique. The comparison is also performed by using the technique of Lomb-Scargle periodogram, based on Fourier analysis.
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Conte et al. (2008) conducted an observational in Healthy (n=7). CZF method (chaos theory-based variability analysis) vs. Fourier spectral analysis and Lomb-Scargle periodogram was evaluated on BaroReflex Sensitivity (BRS) estimation. The CZF method, based on chaos theory and fractal variance, provides a non-linear approach to estimating BaroReflex Sensitivity that avoids the approximations of traditional Fourier spectral analysis.
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