Related Experiment Video
Updated: Jun 26, 2026

08:08
Using Wavelet Entropy to Demonstrate how Mindfulness Practice Increases Coordination between Irregular Cerebral and Cardiac Activities
Published on: May 10, 2017
Cardiorespiratory phase synchronization during normal rest and inward-attention meditation
International Journal of Cardiology
|January 16, 2009
Summary
Inward-attention meditation significantly enhances cardiorespiratory phase synchronization (CRPS) compared to normal rest. Meditation increases the number and duration of synchronized heart and breathing rhythms, favoring specific 4:1 and 5:1 ratios.
Area of Science:
- Cardiorespiratory interactions
- Non-linear dynamics
- Physiological synchronization
Background:
- The cardiac and respiratory systems function as coupled oscillators.
- Cardiorespiratory phase synchronization (CRPS) quantifies the phase-locking between heart rate and respiration.
- Understanding CRPS variations under different regulatory states is crucial for physiological research.
Discussion:
- Inward-attention meditation demonstrably strengthens CRPS, unlike normal relaxation which shows weaker synchronization.
- Meditation leads to a statistically significant increase in the number of synchronous epochs and total synchronization duration.
- Specific frequency ratios, notably 4:1 and 5:1, become predominant during meditation, indicating a more organized cardiorespiratory interaction.
Key Insights:
- Meditation enhances the coupling between cardiac and respiratory systems.
- Synchrogram analysis effectively reveals changes in CRPS during altered states of consciousness.
- The study identifies specific dominant frequency ratios associated with meditative states.
Outlook:
- Further research can explore the long-term effects of meditation on CRPS and its potential clinical implications.
- Investigating other meditative practices and their impact on cardiorespiratory coupling is warranted.
- This work opens avenues for utilizing CRPS as a biomarker for meditative states and their physiological benefits.
Related Concept Videos
Sleep-Wake Cycles
Sleep is an essential physiological process vital to maintaining overall well-being. The reticular activating system (RAS), a network of neurons in the brainstem, regulates wakefulness and sleep. While it may seem passive, sleep consists of distinct cycles, each with its unique characteristics and functions. Two key sleep phases are non-rapid eye movement (NREM) and rapid eye movement (REM).
NREM Sleep
NREM sleep comprises four progressive stages that seamlessly merge:
NREM Sleep
NREM sleep comprises four progressive stages that seamlessly merge:
Respiratory Volumes and Capacities I
Assessing the respiratory rate and rhythm for a complete minute is crucial for evaluating the breathing pattern. Even a minor increase in the patient's average respiratory rate, by as little as three to five breaths per minute, is an early and vital indicator of respiratory distress. Patients with a respiratory rate exceeding twenty-four breaths per minute require close monitoring to determine the physiological alterations. This careful observation is essential for prompt recognition and...
Assessment of Ventilation II: Respiratory Depth and Rhythm
Respiratory Depth
Respiratory depth measures the volume of air inhaled or exhaled during a breath. It can vary from shallow to deep and typically remains consistent when a person is at rest or asleep. Occasionally, individuals will automatically inhale deeply, known as sighing, which inflates the lungs with more air than normal breathing.
To assess respiratory depth, observe the degree of chest excursion or movement:
Respiratory depth measures the volume of air inhaled or exhaled during a breath. It can vary from shallow to deep and typically remains consistent when a person is at rest or asleep. Occasionally, individuals will automatically inhale deeply, known as sighing, which inflates the lungs with more air than normal breathing.
To assess respiratory depth, observe the degree of chest excursion or movement:
Neural Control of Respiration
The neural regulation of respiration is a meticulously coordinated process primarily controlled by the respiratory centers located within the brainstem. These centers, composed of specialized neurons, transmit nerve impulses that control the contraction and relaxation of our respiratory muscles.
Respiratory Centers in the Brainstem
Two primary areas comprise the respiratory center: the medullary respiratory center in the medulla oblongata and the pontine respiratory group in the pons. The...
Respiratory Centers in the Brainstem
Two primary areas comprise the respiratory center: the medullary respiratory center in the medulla oblongata and the pontine respiratory group in the pons. The...
Alterations in Respiration II
There are numerous types of normal and abnormal respiration. Based on ventilatory movements, breathing patterns are classified as regular, deep, or shallow. Examples include Biot's breathing, Cheyne-Stokes respiration, Kussmaul's breathing, hyperventilation, and hypoventilation. Each pattern is clinically significant and aids in evaluating patients.
In Biot's breathing, the respiratory rate and depth are irregular, alternating between periods of deep gasping and apnea. Common causes include...
In Biot's breathing, the respiratory rate and depth are irregular, alternating between periods of deep gasping and apnea. Common causes include...
Special considerations while measuring oxygen saturation
Assessing respiratory rate concurrently with pulse measurement is fundamental to patient care, providing valuable insights into the patient's respiratory function. The normal breathing rate for an adult usually falls within a normal range of 12 to 20 breaths per minute. Abnormal respiratory rates can signal underlying health conditions or the need for immediate intervention.
Ensuring accuracy in vital sign recordings while prioritizing patient comfort and minimizing anxiety is important.
Ensuring accuracy in vital sign recordings while prioritizing patient comfort and minimizing anxiety is important.
