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

Conduction System of the Heart01:19

Conduction System of the Heart

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...
Conduction System of the Heart01:20

Conduction System of the Heart

The cardiac conduction system produces and transmits electrical impulses that prompt myocardial contraction, ensuring efficient heart function. This intricate system ensures that the heart beats in a coordinated and efficient manner, beginning with the atria and then the ventricles. The conduction system optimizes cardiac output by maintaining this precise sequence, which is crucial for adequate blood circulation.
This system relies on the unique properties of nodal and Purkinje cells:...
Velocity and Acceleration of a Wave00:51

Velocity and Acceleration of a Wave

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. We can...
Speed of a Transverse Wave01:13

Speed of a Transverse Wave

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...
Cardiac Action Potential01:30

Cardiac Action Potential

Cardiac action potentials are essential for proper heart function, enabling the rhythmic contractions needed for adequate blood circulation. Nodal cells and Purkinje fibers, specialized for electrical conduction, generate these action potentials.
The cardiac action potential process involves a series of phases characterized by the movement of ions across the cardiac cell membranes, leading to the depolarization and repolarization of the cardiac myocytes.
Ionic Basis of Cardiac Action Potentials
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...

You might also read

Related Articles

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

Sort by
Same author

Harnessing historical data to derive reference limits - A comparison of e-norms to traditionally derived reference limits.

Clinical neurophysiology practice·2024
Same author

[A tribute to Doctor Pierre Soichot (1945-2014)].

Neurophysiologie clinique = Clinical neurophysiology·2016
Same author

The clinical use of macro and surface electromyography in diagnosis and follow-up of endocrine and drug-induced myopathies.

Journal of endocrinological investigation·2007
Same author

TeleMedicine and Internet EMG.

Supplements to Clinical neurophysiology·2003
Same author

Recent developments in our understanding of motor control, corticomotoneuronal connections and the activation of motoneurons and motoneuronal pools.

Supplements to Clinical neurophysiology·2003
Same author

Effect of gender on orthodromic sensory nerve action potential amplitude.

American journal of physical medicine & rehabilitation·2001

Related Experiment Video

Updated: Jun 10, 2026

Ultrasound-based Pulse Wave Velocity Evaluation in Mice
08:07

Ultrasound-based Pulse Wave Velocity Evaluation in Mice

Published on: February 14, 2017

New method for expressing F-wave data as conduction velocity.

D I Tanenbaum1, J F Jabre

  • 1Department of Physical Medicine and Rehabilitation, Tufts, New England Medical Center, Boston, Massachusetts, U.S.A.; Department of Neurology, Boston University, Boston, Massachusetts, U.S.A.; Boston VA Medical Center, Boston, Massachusetts, U.S.A.

Journal of Electromyography and Kinesiology : Official Journal of the International Society of Electrophysiological Kinesiology
|August 20, 2010
PubMed
Summary

A new method calculates normalized F-wave conduction velocity (NFCV) for motor nerve studies. NFCV correlates with motor conduction velocity (MCV) and may indicate nerve pathology, especially with aging.

More Related Videos

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

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

Related Experiment Videos

Last Updated: Jun 10, 2026

Ultrasound-based Pulse Wave Velocity Evaluation in Mice
08:07

Ultrasound-based Pulse Wave Velocity Evaluation in Mice

Published on: February 14, 2017

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

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

Area of Science:

  • Neuroscience
  • Clinical Electrophysiology

Background:

  • F-wave latency and motor conduction velocity (MCV) are standard electrodiagnostic measures.
  • Assessing nerve conduction velocity can be limited by various factors.
  • A need exists for refined methods to evaluate nerve function.

Purpose of the Study:

  • To introduce a novel method for calculating normalized F-wave conduction velocity (NFCV).
  • To assess the correlation of NFCV with MCV in peripheral nerves.
  • To evaluate the sensitivity of NFCV to aging and potential nerve pathology.

Main Methods:

  • Utilized surface measurements for MCV calculation.
  • Incorporated F-wave latency and a compensation factor (CF).
  • Calculated NFCV for median, ulnar, peroneal, and posterior tibial nerves.

Main Results:

  • Established significant correlations between segmental and whole extremity lengths.
  • Demonstrated high correlations between NFCV and MCV in a normal population.
  • Found NFCV to be more sensitive to age than F-wave latency or MCV.

Conclusions:

  • NFCV is a valid descriptor of nerve conduction, comparable to MCV.
  • NFCV shows potential as a sensitive indicator of motor nerve pathology.
  • The NFCV method offers a valuable tool for electrodiagnostic assessments, particularly in aging populations.