分段滤波在心率变异性功率谱分析中的应用

心率变异性是了解人体植物神经系统功能状态的方便窗口，近年来已成为心血管疾病临床研究的一个前沿热点。心率变异性长时程功率谱主要成份分为超低频、极低频、低频、高频，不同的频段具有不同的生理意义，文中介绍了了一种可得到各频段局部范围精细结构的分段滤波方法，从而利用于观察各频段的变化趋势，为医学上对心率变异性信号的进一步研究及临床上的应用提供科学的手段。

Filtering Method for the Decomposition of Heart Rate Variability Power Spectral

Heart rate variability is a convenient tool to study the autonomic nervous system of human body. It is a focus of studying cardiovascular disease in clinic. The main spectral components are distinguished in the heart rate variability spectrum: ultra low frequency(ULF),very low frequency(VLF), low frequency(LF), high frequency(HF) components .While different part has different physiological meaning. This paper discusses the design of an effective digital filter for heart rate variability power spectral analysis,which provides a scientific measure of heart rate variability power spectral analysis in further studies and clinical applications.