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Related Concept Videos

Correlation between ECG and Cardiac Cycle01:25

Correlation between ECG and Cardiac Cycle

The electrical signals recorded on an electrocardiogram (ECG) occur before the mechanical processes of contraction and relaxation during the cardiac cycle.
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Related Experiment Video

Updated: May 9, 2026

Custom Smartphone Application to Guide Locomotor-Respiratory Coupling in the Field Using Step-Adaptive Breathing Sounds
06:26

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Published on: September 27, 2024

Estimating coupling directions in the cardiorespiratory system using recurrence properties.

Norbert Marwan1, Yong Zou, Niels Wessel

  • 1Potsdam Institute for Climate Impact Research, 14412 Potsdam, Germany. marwan@pik-potsdam.de

Philosophical Transactions. Series A, Mathematical, Physical, and Engineering Sciences
|July 17, 2013
PubMed
Summary
This summary is machine-generated.

This study used joint recurrence plots to analyze the human cardiorespiratory system. Findings reveal directional couplings from respiration to heart rate and heart rate to blood pressure.

Keywords:
cardiorespiratory systemcoupling directionsrecurrence plots

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Area of Science:

  • Complex systems analysis
  • Physiological systems dynamics
  • Nonlinear time series analysis

Background:

  • Understanding complex system interactions is crucial in physiology.
  • Coupling directionality in cardiorespiratory dynamics remains incompletely understood.
  • Recurrence quantification analysis offers tools to study system interactions.

Purpose of the Study:

  • To investigate the directional coupling between heart rate, mean arterial blood pressure, and respiration using joint recurrence plots.
  • To apply a novel method for analyzing experimental time series data of the human cardiorespiratory system.
  • To determine the asymmetry of interactions within the cardiorespiratory system.

Main Methods:

  • Utilized joint recurrence plots to estimate conditional probabilities of recurrence.
  • Applied the method to experimental time series data from the human cardiorespiratory system.
  • Analyzed the temporal interactions between heart rate, mean arterial blood pressure, and respiration.

Main Results:

  • Detected a significant coupling from the respiratory system to heart rate.
  • Identified a directional coupling from heart rate to mean arterial blood pressure.
  • Could not establish a clear coupling direction between mean arterial blood pressure and respiration.

Conclusions:

  • The human cardiorespiratory system exhibits asymmetric couplings.
  • Respiration influences heart rate, and heart rate influences blood pressure.
  • Further investigation is needed to clarify the blood pressure-respiration interaction.