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Sympatho-vagal activity described by the complex and deterministic behavior of heart rate variability

机译：交感迷走活动由心率变异性的复杂和确定性行为描述

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Presents new variables to improve the characterization of autonomic nervous system function by analyzing heart rate variability. These new variables are the effective energies (Efe), defined from the Hartley-Shannon theorem, in the three frequency bands Efe/sub VLF/ (0-0.04 Hz), Efe/sub LF/ (0.04-0.15 Hz) and Efe/sub HF/ (0.15-0.45 Hz). The effective energy is obtained using a complexity measure of the R-R signal (the Shannon entropy) and the instantaneous frequency, defined from the time-frequency representation. Two groups of subjects have been studied: 53 patients with idiopathic dilated cardiomyopathy (IDC) and 64 healthy people considered as the control group. The effective energies obtained in the VLF, LF and HF bands presented statistically significant differences (p>0.005) characterizing IDC patients. The instantaneous frequency contained in the VLF band was lower in IDC patients than in the control group. The main complexity differences given by the analyzed entropies were obtained in the LF and HF bands.
机译：通过分析心率变异性来提高新的变量来改善自主神经系统功能的表征。这些新变量是从Hartley-Shannon定理定义的有效能量（EFE），在三个频段EFE / sub VLF /（0-0.04 Hz）中，EFE / Sub LF /（0.04-0.15 Hz）和EFE /子HF /（0.15-0.45 Hz）。使用从时频表示定义的R-R信号（Shannon熵）和瞬时频率的复杂性度量获得有效能量。已经研究了两组受试者：53例特发性扩张心肌病（IDC）和64名健康人，被认为是对照组。在VLF，LF和HF带中获得的有效能量呈现统计学显着的差异（P> 0.005）表征IDC患者。 VLF带中包含的瞬时频率在IDC患者中较低，而不是对照组。在LF和HF条带中获得分析的熵给出的主要复杂性差异。

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