Study on Relationship Between Sleep Stages and Heart Rate Variability in Normal
With the aim of better assessing the relationship between heart rate variability (HRV) and sleep stages, detrended fluctuation analysis (DFA) and autoregressive (AR) spectral analysis of HRV are performed in 45 healthy subjects during various sleep stages. The scaling exponents α_1 and α_2 of DFA, the normalized (n.u.) power of LF and HF spectral bands, LF/HF ratio are measured. The results indicate a significant decrease in scaling exponents α_1 and α_2 of DFA from REM to light sleep and deep sleep, all of which are above 0.5. Meanwhile, spectral parameters (LFn.u., HFn.u. and LF/HF) show the increasing parasympathetic activity. Furthermore, significance analysis on scaling exponents and spectral parameters demonstrates that scaling exponents have more significant differences than spectral parameters in distinguishing different sleep stages. It is concluded that DFA will be a better analysis method to quantify the relationship between HRV and sleep stages in normal.
Sleep stages heart rate variability detrended fluctuation analysis (DFA) autoregressive spectral analysis
Jiang Liyi Wu Xiaoming
Department of Biomedical Engineering,South China University of Technology,Guangzhou 510006 China
国际会议
厦门
英文
1460-1463
2010-05-22（万方平台首次上网日期，不代表论文的发表时间）