Neurocardiac-cardiorespiratory interaction of heart-brain mailuns synchrony at deep zen meditation

Pei-Chen Lo*, Wu Jue Miao Tian

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


Innovatively new behaviors of heart rate variability caused by special heart-transition process were observed in the long-term, well-experienced Zen practitioners while practicing the heart-to-heart imprint sealing (HHIS) Zen meditation. HHIS Zen practice involves specific neurocardiac-cardiorespiratory interaction while on the way of realizing the heart-dominant, detached brain. Results of analyzing the electrocardiogram and respiratory signals of 10 experienced practitioners reveal several distinctive characteristics: (1) remarkably linear correlation between standard deviation of the normal R-to-R intervals, SDNN, and total power in very-low-frequency (VLF, 0.0033-0.04Hz) band of power spectrum of the heart-rate sequence, (2) time-varying VLF power dominating over the low-frequency and high-frequency power in heart rate variability (HRV) variations, (3) intermittent transition into slowly, deeply abdominal respiration inducing a boost of heart rates, (4) heart-rate baseline slowly fluctuating at 0.005-0.0067Hz, about 1.5-2 cycles in 5-min period, and (5) remarkable respiratory sinus arrhythmia (RSA) synchrony between heart rate and respiration rhythm. This paper proposes a rational scientific hypothesis for the neurocardiac-cardiorespiratory mechanism. The unique scheme of HHIS Zen meditation involves the spiritual-qi concentration and refinement for pinpointing into the particular energy centers, mailuns. Ignition by a subtle, deepest abdominal respiration, electrical impulses rapidly transmit from solar plexus to branchial plexuses to activate unique heart-transition process. Simultaneously, another branch streams upward the spinal cord to cervical plexus and brainstem that effectively harmonizes neurocardiac interactions. To investigate the underlying behaviors, time-domain and frequency-domain HRV based on continuous wavelet transform were employed.

Original languageEnglish
Article number1650039
JournalBiomedical Engineering - Applications, Basis and Communications
Issue number6
StatePublished - 1 Dec 2016


  • Heart rate variability
  • Neurocardiac-cardiorespiratory interactions
  • Respiratory sinus arrhythmia
  • Very-low-frequency power
  • Zen meditation

Fingerprint Dive into the research topics of 'Neurocardiac-cardiorespiratory interaction of heart-brain mailuns synchrony at deep zen meditation'. Together they form a unique fingerprint.

Cite this