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

Electrical Current01:10

Electrical Current

7.2K
Electrical current is defined as the rate at which charge flows. When there is a large current present, such as that used to run a refrigerator, a large amount of charge moves through the wire in a small amount of time. If the current is small, such as that used to operate a handheld calculator, a small amount of charge moves through the circuit over a long period of time. The SI unit for current is the ampere (A), named for the French physicist André-Marie Ampère (1775–1836).
7.2K
Sustainable Development01:43

Sustainable Development

15.1K
As the human population continues to grow and use resources, we must be mindful of our planet’s natural limits. Sustainable development provides a pathway to maintain and improve human life now while also ensuring that future generations will have the resources that they need. The long-term success of sustainability efforts rests on understanding the interplay between human actions and ecological systems.
15.1K
Current Density01:21

Current Density

5.1K
The total amount of current flowing through one unit value of a cross-sectional area is referred to as current density. If the current flow is uniform, the amount of current flowing through a conductor is the same at all points along the conductor, even if the conductor area varies. The current density consists of the local magnitude and direction of the charge flow, which varies from point to point. Current density is measured in amperes per meter square, and direction is defined as the net...
5.1K
Eddy Currents01:25

Eddy Currents

2.6K
Since eddy currents occur only in conductors, magnets can separate metals from other materials. For example, in a recycling center, trash is dumped in batches down a ramp, beneath which lies a powerful magnet. Conductors in the trash are slowed by eddy currents, while nonmetals in the trash move on, separating from the metals. This works for all metals, not just ferromagnetic ones.
Other major applications of eddy currents appear in metal detectors and the braking systems of trains and roller...
2.6K
Displacement Current01:19

Displacement Current

3.8K
Ampère's law, in its usual form, does not work in places where the current changes with time and is not steady. Thus, Maxwell suggested including an additional contribution, called the displacement current, Id, to the real conduction current I.
3.8K
Charge and Current01:14

Charge and Current

5.7K
Electric charge is the most fundamental quantity in an electric circuit. The effects of electric charge are encountered daily, such as when a wool sweater sticks to the human body or when a person receives a shock while walking on a carpet.
Charge is an inherent property of the atomic particles that make up matter and is measured in units called coulombs (C). Matter is composed of atoms, each consisting of electrons, protons, and neutrons. Electrons have a negative charge (-e), while protons...
5.7K

You might also read

Related Articles

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

Sort by
Same author

Electroencephalography signals in a female Fragile X Syndrome mouse model.

NeuroImage·2026
Same author

Alterations in electroencephalography signals in female fragile X syndrome mouse model on a C57BL/6J background.

Physiology & behavior·2026
Same author

Alterations in auditory midbrain processing is observed in both female and male mouse model of Fragile X Syndrome.

Neuroscience·2025
Same author

Reducing flight time during running decreases tibial-fibular strains in male runners: a finite element analysis.

Journal of biomechanics·2025
Same author

Corticomuscular coherence during upright standing in unilateral transfemoral amputees.

Brain communications·2025
Same author

Scale-down optimization of a robust, parallelizable human induced pluripotent stem cell bioprocess for high-throughput research.

Biotechnology reports (Amsterdam, Netherlands)·2025

Related Experiment Video

Updated: Feb 2, 2026

Psychophysiological Stress Assessment Using Biofeedback
10:16

Psychophysiological Stress Assessment Using Biofeedback

Published on: July 31, 2009

13.9K

Development of a multichannel current-EMG system for coherence modulation with visual biofeedback.

Daniel Comaduran Marquez1, Vinzenz von Tscharner2, Kartikeya Murari1,3

  • 1Biomedical Engineering Graduate Program, University of Calgary, Calgary AB, Canada.

Plos One
|November 17, 2018
PubMed
Summary

This study introduces a new biofeedback system using multichannel current-based electromyogram (EMG) to enhance intermuscular coherence. Results show users can voluntarily increase muscle coherence, aiding rehabilitation and training.

More Related Videos

Providing Visual Biofeedback Using Brightness Mode Ultrasound During a Golf Swing
06:42

Providing Visual Biofeedback Using Brightness Mode Ultrasound During a Golf Swing

Published on: August 25, 2022

2.5K
The use of Biofeedback in Clinical Virtual Reality: The INTREPID Project
06:52

The use of Biofeedback in Clinical Virtual Reality: The INTREPID Project

Published on: November 12, 2009

15.7K

Related Experiment Videos

Last Updated: Feb 2, 2026

Psychophysiological Stress Assessment Using Biofeedback
10:16

Psychophysiological Stress Assessment Using Biofeedback

Published on: July 31, 2009

13.9K
Providing Visual Biofeedback Using Brightness Mode Ultrasound During a Golf Swing
06:42

Providing Visual Biofeedback Using Brightness Mode Ultrasound During a Golf Swing

Published on: August 25, 2022

2.5K
The use of Biofeedback in Clinical Virtual Reality: The INTREPID Project
06:52

The use of Biofeedback in Clinical Virtual Reality: The INTREPID Project

Published on: November 12, 2009

15.7K

Area of Science:

  • Neuroscience
  • Biomedical Engineering
  • Kinesiology

Background:

  • Electromyogram (EMG) biofeedback can modify neuromotor control by using muscle frequency bands.
  • Current EMG instrumentation may not optimally measure coherent muscle activations for daily tasks.
  • Multimuscle activation is crucial for complex human movements.

Purpose of the Study:

  • To develop a multichannel current-based EMG amplifier for biofeedback.
  • To utilize intermuscular coherence as a control feature in a visual biofeedback system.
  • To investigate the voluntary modulation of intermuscular coherence.

Main Methods:

  • Development of a novel multichannel current-based EMG amplifier.
  • Implementation of a visual biofeedback system using intermuscular coherence.
  • Leg extension protocol involving ten subjects to train intermuscular coherence between vastii muscles.

Main Results:

  • Demonstrated the feasibility of voluntarily increasing intermuscular coherence via visual biofeedback.
  • Successfully utilized a new EMG amplifier and biofeedback system for neuromotor control.
  • Showed that ten subjects could modulate intermuscular coherence.

Conclusions:

  • A multichannel current-based EMG biofeedback system can effectively enhance intermuscular coherence.
  • This technology holds potential for improving endurance training and physical rehabilitation.
  • Future applications may involve more complex motor skill acquisition and recovery.