Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Propagation Speed of Electromagnetic Waves01:30

Propagation Speed of Electromagnetic Waves

4.1K
Electromagnetic waves are consistent with Ampere's law. Assuming there is no conduction current Ampere's law is given as:
4.1K
Velocity and Acceleration of a Wave00:51

Velocity and Acceleration of a Wave

4.4K
A wave propagates through a medium with a constant speed, known as a wave velocity. It is different from the speed of the particles of the medium, which is not constant. In addition, the velocity of the medium is perpendicular to the velocity of the wave. The variable speed of the particles of the medium implies that there must be acceleration associated with it. 
The velocity of the particles can be obtained by taking the partial derivative of the position equation with respect to time....
4.4K
Speed of a Transverse Wave01:13

Speed of a Transverse Wave

2.0K
The speed of a wave depends on the characteristics of the medium. For example, in the case of a guitar, the strings vibrate to produce the sound. The speed of the waves on the strings and the wavelength determine the frequency of the sound produced. The strings on a guitar have different thicknesses but may be made of similar material. They have different linear densities, and the linear density is defined as the mass per length.
One of the key properties of any wave is the wave speed. Light...
2.0K
Electrophysiology of Normal Cardiac Rhythm01:19

Electrophysiology of Normal Cardiac Rhythm

7.6K
The normal cardiac rhythm is a synchronized electrical activity that facilitates the regular and coordinated contraction of the heart muscle. This process is essential for efficient blood circulation throughout the body. The fundamental elements involved in establishing and maintaining this rhythm include the unique electrical properties of cardiac muscle cells, the sinoatrial (SA) node's pacemaker function, the specialized conducting system, and the ionic mechanisms underlying each phase...
7.6K
Dysrhythmias III: Characteristics of Dysrhythmias01:29

Dysrhythmias III: Characteristics of Dysrhythmias

177
Dysrhythmias, also known as arrhythmias, are irregular heart rhythms that result from abnormal electrical activity in the heart, affecting its ability to circulate blood efficiently. Tachyarrhythmias, a subset of dysrhythmias, are characterized by abnormally fast heart rates exceeding 100 beats per minute. Here are some types of tachyarrhythmias with their distinct ECG features:Sinus Tachycardia:Sinus tachycardia presents a regular heart rhythm with an increased rate of 101-180 beats per...
177
Conduction System of the Heart01:19

Conduction System of the Heart

10.9K
Autorhythmicity is a term that refers to the heart's inherent ability to generate electrical signals and instigate muscle contractions. This self-regulating conduction system within the heart consists of two key components: the pacemaker cells and specialized conducting cells.
The pacemaker cells are located in two primary nodes: the sinoatrial (SA) node and the atrioventricular (AV) node. The SA node pacemaker cells can autonomously depolarize, triggering an action potential that leads to the...
10.9K

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

A stable hothouse triggered by a tipping mechanism.

Philosophical transactions. Series A, Mathematical, physical, and engineering sciences·2026
Same author

Mechanistic origins of temperature scaling in the early embryonic cell cycle.

Nature communications·2025
Same author

The nuclear-cytoplasmic ratio controls the cell-cycle period in compartmentalized frog egg extract.

Current biology : CB·2025
Same author

Mechanistic origins of temperature scaling in the early embryonic cell cycle.

bioRxiv : the preprint server for biology·2025
Same author

Wave-driven phase wave patterns in a ring of FitzHugh-Nagumo oscillators.

Physical review. E·2024
Same author

Spatial heterogeneity accelerates phase-to-trigger wave transitions in frog egg extracts.

Nature communications·2024

Related Experiment Video

Updated: Oct 23, 2025

Patient-specific Modeling of the Heart: Estimation of Ventricular Fiber Orientations
12:09

Patient-specific Modeling of the Heart: Estimation of Ventricular Fiber Orientations

Published on: January 8, 2013

13.8K

Analytical approximations for the speed of pacemaker-generated waves.

Jan Rombouts1, Lendert Gelens1

  • 1Laboratory of Dynamics in Biological Systems, Department of Cellular and Molecular Medicine, University of Leuven (KU Leuven), B-3000 Leuven, Belgium.

Physical Review. E
|August 20, 2021
PubMed
Summary

This study analyzes wave speed in oscillatory media using analytical tools. We investigated how pacemaker properties and system dynamics influence wave propagation in chemical and biological systems.

More Related Videos

Quantification of Global Diastolic Function by Kinematic Modeling-based Analysis of Transmitral Flow via the Parametrized Diastolic Filling Formalism
11:04

Quantification of Global Diastolic Function by Kinematic Modeling-based Analysis of Transmitral Flow via the Parametrized Diastolic Filling Formalism

Published on: September 1, 2014

11.3K
Microelectrode Array Recording of Sinoatrial Node Firing Rate to Identify Intrinsic Cardiac Pacemaking Defects in Mice
09:20

Microelectrode Array Recording of Sinoatrial Node Firing Rate to Identify Intrinsic Cardiac Pacemaking Defects in Mice

Published on: July 5, 2021

3.2K

Related Experiment Videos

Last Updated: Oct 23, 2025

Patient-specific Modeling of the Heart: Estimation of Ventricular Fiber Orientations
12:09

Patient-specific Modeling of the Heart: Estimation of Ventricular Fiber Orientations

Published on: January 8, 2013

13.8K
Quantification of Global Diastolic Function by Kinematic Modeling-based Analysis of Transmitral Flow via the Parametrized Diastolic Filling Formalism
11:04

Quantification of Global Diastolic Function by Kinematic Modeling-based Analysis of Transmitral Flow via the Parametrized Diastolic Filling Formalism

Published on: September 1, 2014

11.3K
Microelectrode Array Recording of Sinoatrial Node Firing Rate to Identify Intrinsic Cardiac Pacemaking Defects in Mice
09:20

Microelectrode Array Recording of Sinoatrial Node Firing Rate to Identify Intrinsic Cardiac Pacemaking Defects in Mice

Published on: July 5, 2021

3.2K

Area of Science:

  • * Physics
  • * Chemistry
  • * Biology

Background:

  • * Oscillatory media generate waves from faster-oscillating pacemaker regions.
  • * These waves synchronize systems and transmit information over distances.
  • * Understanding wave speed is crucial for applications in chemical and biological systems.

Purpose of the Study:

  • * To investigate factors determining wave speed in oscillatory media.
  • * To analyze wave propagation in negative-feedback oscillator systems.
  • * To compare analytical predictions with numerical simulations.

Main Methods:

  • * Application of singular perturbation and phase reduction methods.
  • * Analysis of two negative-feedback oscillator models: bistability-based and time-delay-based.
  • * Investigation of time-scale separation, pacemaker size, and frequency effects.

Main Results:

  • * Analytical estimates for wave speed were derived.
  • * The influence of system parameters on wave speed was quantified.
  • * Comparison with prior numerical simulations validated the analytical findings.

Conclusions:

  • * The study provides analytical insights into wave speed determination in oscillatory media.
  • * Findings are applicable to understanding information transmission in chemical and biological systems.
  • * The methods offer a framework for analyzing complex oscillatory dynamics.