Time-variant parametric estimation of transient quadratic phase couplings between heart rate components in healthy neonates
作者： K. Schwab , M. Eiselt , P. Putsche , M. Helbig , H. Witte
DOI: 10.1007/S11517-006-0120-7
关键词: Parametric statistics 、 Bispectrum 、 Cardiology 、 Bispectral analysis 、 Heart rate variability 、 Transient (oscillation) 、 Electronic engineering 、 Fast Fourier transform 、 Heart rate 、 Vagal tone 、 Internal medicine 、 Mathematics
摘要: The heart rate variability (HRV) can be taken as an indicator of the coordination cardio-respiratory rhythms. Bispectral analysis using a direct (fast Fourier transform based) and time-invariant approach has shown occurrence quadratic phase coupling (QPC) between low-frequency (LF: 0.1 Hz) high-frequency (HF: 0.4–0.6 component HRV during quiet sleep in healthy neonates. corresponds to Mayer–Traube–Hering waves blood pressure respiratory sinus arrhythmia (RSA). Time-variant, parametric estimation bispectrum provides possibility quantifying QPC time course. Therefore, aim this work was parametric, time-variant bispectral neonatal same neonates used direct, approach. For first rhythms course HF LF could HRV.
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