Abstract —A new method has been proposed for processing the nonstationary rhythmogram signal recorded in the head-down tilt test (HDT). The method is based on the continuous wavelet transform of the heart rate signal with a frequency modulation component. The rhythmogram signal was shown to be a system of heart rhythm bursts of different frequency ranges. Quantitative indices were developed to analyze the system of bursts. The translational signal transfer method was used to eliminate the boundary effects that arise in analyses of the low-frequency components of the rhythmogram signal.

中文翻译：

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头向下倾斜测试期间的非平稳心率变异性

摘要 — 提出了一种处理低头倾斜测试 (HDT) 中记录的非平稳节律图信号的新方法。该方法基于具有频率调制分量的心率信号的连续小波变换。节律图信号被证明是一个不同频率范围的心律突发系统。开发了定量指标来分析爆发系统。平移信号传输方法用于消除在分析节律图信号的低频分量时出现的边界效应。