Int J Cardiol. 2010 Nov 5;145(1):142-6. doi: 10.1016/j.ijcard.2009.06.058. Epub 2009 Jul 24.
The dynamic interactions among physiological rhythms imbedded in the heart rate signal can give valuable insights into autonomic modulation in conditions of reduced outward attention. Therefore, in this study we analyzed the heart rate variability (HRV) in different levels of practice in Zen meditation (Zazen). Nineteen subjects with variable experience took part in this study. In four special cases we collected both HRV and respiration data. The time series were analyzed in frequency domain and also using the Continuous Wavelet Transform, which detects changes in the time domain and in the frequency domain simultaneously. The shifts in the respiratory modulation of heart rate, or respiratory sinus arrhythmia (RSA), reflect the different levels of practice among practitioners with variable experience in Zazen; in turn the modulation of the RSA may reflect changes in the breathing pattern as in the parasympathetic outflow related to the quality and focus of attention in each stage.
心率信号中嵌入的生理节律的动态相互作用，可以为注意力降低时自主调节提供有价值的见解。因此，在这项研究中，我们分析了禅修（坐禅）不同练习水平下的心率变异性（HRV）。19 名具有不同经验的受试者参与了这项研究。在四个特殊情况下，我们同时收集了 HRV 和呼吸数据。时间序列在频域中进行分析，也使用连续小波变换进行分析，该变换同时检测时域和频域中的变化。心率呼吸调制的变化，或呼吸窦性心律失常（RSA），反映了具有不同 Zazen 练习水平的实践者之间的不同；反过来，RSA 的调制可能反映了与每个阶段的注意力质量和焦点相关的呼吸模式的变化，类似于与副交感神经传出相关的变化。
