心率变异性的频谱功率密度参数与确定性混沌之间的关系。

Relations between parameters of spectral power densities and deterministic chaos of heart-rate variability.

作者信息

Zwiener U, Hoyer D, Lüthke B, Schmidt K, Bauer R

机构信息

Institute of Pathophysiology, University of Jena, Germany.

出版信息

J Auton Nerv Syst. 1996 Mar 7;57(3):132-5. doi: 10.1016/0165-1838(95)00083-6.

DOI:10.1016/0165-1838(95)00083-6

PMID:8964936

Abstract

To evaluate whether or not heart-rate variations (HRV) have both periodic and deterministic-chaotic properties in conscious and anaesthetized states, HRV of 9 rabbits were analysed by power spectral analysis and methods of deterministic chaos. In order to correlate these properties with the physiological structure of HRV, cholinergic and beta-adrenergic blockades and medullar transections were done. A predominant deterministic-chaotic structure of HRV with high fractal correlation dimension (CD) during conscious state changes to a more periodic structure and lower CD during general anaesthesia. The main periodic and deterministic-chaotic components of HRV are vagally mediated because of their strong reduction by cholinergic blockade, but not by beta-adrenergic blockade or medullar transection.

摘要

为评估心率变异性（HRV）在清醒和麻醉状态下是否同时具有周期性和确定性混沌特性，采用功率谱分析和确定性混沌方法对9只家兔的HRV进行了分析。为了将这些特性与HRV的生理结构相关联，进行了胆碱能和β-肾上腺素能阻滞以及延髓横断术。清醒状态下具有高分形关联维数（CD）的HRV主要确定性混沌结构在全身麻醉期间转变为更具周期性的结构且CD降低。HRV的主要周期性和确定性混沌成分由迷走神经介导，因为它们会因胆碱能阻滞而显著降低，但不会因β-肾上腺素能阻滞或延髓横断术而降低。