Wavelet analysis of nonstationary heart rate variability in a head-up tilt-table test

被引：2
|
作者：
Bozhokin S.V. [1 ]
Lesova E.M. [1 ]
Samoilov V.O. [1 ]
Tolkachev P.I. [1 ]
机构：
[1] State Polytechnical University
来源：
Biophysics | 2012年 / 57卷 / 4期
关键词：
continuous wavelet transform; head-up tilt test; heart rate variability; instantaneous energy distribution over frequencies; spectral integral; spectrum local density;
D O I：
10.1134/S0006350912040033
中图分类号：
学科分类号：
摘要：
Heart rate variability during the head-up tilt test (HUT) was investigated using an automated setup of dynamic positioning in the gravity field. The wavelet theory was applied to find the dynamics of changes in the spectral properties of rhythmograms during the transitional steps of HUT. Quantitative parameters (spectral integrals, instantaneous maximal frequencies, nonstationarity factors) that describe the transients of such nonstationary HUT were calculated. © 2012 Pleiades Publishing, Ltd.
引用
收藏
页码：530 / 543
页数：13
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