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

Electrocardiogram01:29

Electrocardiogram

An electrocardiogram (ECG or EKG) is a critical diagnostic tool that records the electrical signals produced by the heart during each heartbeat. This recording is achieved through electrodes placed strategically on the arms, legs, and chest. The electrocardiograph amplifies these signals and produces 12 distinct tracings, offering a comprehensive understanding of the heart's electrical activity.
Three major waveforms are present in a typical ECG recording: the P wave, the QRS complex, and the T...
Electrocardiogram Fundamentals01:28

Electrocardiogram Fundamentals

Introduction
An electrocardiogram (ECG) is a diagnostic tool for identifying cardiac conditions such as arrhythmias, conduction abnormalities, and myocardial ischemia.
Definition
An electrocardiogram (ECG) visualizes the heart's electrical activity by tracing the electrical movement associated with each heartbeat on a graph or monitor. As the heart beats, an electrical wave passes through it, correlating with the cardiac cycle events.
Parts of an ECG
An ECG utilizes electrodes on the skin to...
ECG Interpretation of Rhythms01:24

ECG Interpretation of Rhythms

An electrocardiogram (ECG)graphically represents the heart's electrical activity on ECG paper or a monitor.
Components of the Electrocardiogram
The primary components of a normal ECG waveform in Normal sinus rhythm(NSR) include the P wave, PR interval, QRS complex, ST segment, T wave, and occasionally a U wave.
ECG waveforms are divided by vertical and horizontal lines at standard intervals.
The horizontal axis measures time and rate, and the vertical axis measures amplitude or voltage. When...
Imaging Studies for Cardiovascular System I:Echocardiography01:17

Imaging Studies for Cardiovascular System I:Echocardiography

Cardiac imaging studies encompass a wide range of noninvasive and minimally invasive techniques designed to visualize the heart's structure and function in detail. One such technique is echocardiography, which uses high-frequency ultrasound waves to produce detailed images of the heart, known as echocardiograms.
Indications: Echocardiography is utilized to diagnose heart failure, valve disorders, and myocardial infarction. It also assesses cardiac structures' size, shape, and motion, evaluates...
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.
A cardiac action potential originates in the SA node and spreads throughout the atria and the AV node in approximately 0.03 seconds. This results in the P wave in an ECG and triggers atrial contraction. The action potential is then briefly slowed at the AV node, allowing the atria to contract and fill the ventricles with blood before...

You might also read

Related Articles

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

Sort by
Same author

Editorial: Advancing digital mental health for youth.

Frontiers in digital health·2026
Same author

Accounting for inconclusive results and repeated testing: A framework for evaluating wearable electrocardiogram diagnostic performance with application to Apple Watch and artificial intelligence-enhanced interpretation.

Heart rhythm·2025
Same author

Are single-lead consumer ECG devices enough for accurate QTc monitoring? A calibrated uncertainty AI approach.

Journal of electrocardiology·2025
Same author

Dermoscopic evaluation of normal canine skin with a handheld dermoscope.

Veterinary dermatology·2025
Same author

Response to Letter Regarding "Comparison of 2 Assays for Measuring Serum Total Thyroxine Concentration in Dogs and Cats".

Journal of veterinary internal medicine·2025
Same author

Computed Tomographic Hepatic Volumetry in Dogs with Congenital Portosystemic Shunts.

Veterinary sciences·2024

Related Experiment Video

Updated: May 13, 2026

Real-Time Cardiac Mapping with a Noninvasive Imageless Electrocardiographic Imaging System
10:17

Real-Time Cardiac Mapping with a Noninvasive Imageless Electrocardiographic Imaging System

Published on: April 11, 2025

Methods for presenting and visualising electrocardiographic data: From temporal signals to spatial imaging.

Raymond R Bond1, Dewar D Finlay, Chris D Nugent

  • 1University of Ulster, Jordanstown, Northern Ireland, UK. rb.bond@ulster.ac.uk

Journal of Electrocardiology
|March 7, 2013
PubMed
Summary

This paper reviews alternative electrocardiogram (ECG) visualization methods beyond the standard 12-lead trace. Future clinical integration requires standardized supplementary visualizations and interactive software for advanced cardiac analysis.

More Related Videos

Optocardiography and Electrophysiology Studies of Ex Vivo Langendorff-perfused Hearts
09:52

Optocardiography and Electrophysiology Studies of Ex Vivo Langendorff-perfused Hearts

Published on: November 7, 2019

High-Throughput Analysis of Optical Mapping Data Using ElectroMap
07:36

High-Throughput Analysis of Optical Mapping Data Using ElectroMap

Published on: June 4, 2019

Related Experiment Videos

Last Updated: May 13, 2026

Real-Time Cardiac Mapping with a Noninvasive Imageless Electrocardiographic Imaging System
10:17

Real-Time Cardiac Mapping with a Noninvasive Imageless Electrocardiographic Imaging System

Published on: April 11, 2025

Optocardiography and Electrophysiology Studies of Ex Vivo Langendorff-perfused Hearts
09:52

Optocardiography and Electrophysiology Studies of Ex Vivo Langendorff-perfused Hearts

Published on: November 7, 2019

High-Throughput Analysis of Optical Mapping Data Using ElectroMap
07:36

High-Throughput Analysis of Optical Mapping Data Using ElectroMap

Published on: June 4, 2019

Area of Science:

  • Cardiology
  • Medical Imaging
  • Data Visualization

Background:

  • The electrocardiogram (ECG) is a standard non-invasive tool for assessing heart electrical activity.
  • The traditional 12-lead ECG has been the standard visualization since 1938.
  • Numerous alternative ECG visualization methods have been developed.

Purpose of the Study:

  • To provide an overview of diverse ECG visualization techniques.
  • To introduce early-stage researchers to the field of ECG visualization.
  • To explore the future integration of advanced ECG visualization into clinical practice.

Main Methods:

  • Categorization of visualization methods into temporal, vectorial, spatial, and interactive.
  • Temporal methods display data over time.
  • Vectorial methods show data direction and magnitude.
  • Spatial methods present data in 2D or 3D.
  • Interactive methods allow detailed data interrogation.

Main Results:

  • Spatial and vector-based visualizations have a long history and are unlikely to be replaced.
  • Alternative methods are more likely to supplement, rather than replace, the standard 12-lead ECG.
  • Standardization of supplementary visualization designs is crucial for widespread adoption.

Conclusions:

  • Established methods like spatial and vector visualization are enduring.
  • The future lies in supplementing the standard ECG with novel, standardized visualizations.
  • Integration of advanced techniques into routine practice necessitates intuitive software and mobile interactivity.