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

Electrodes: Overview01:17

Electrodes: Overview

2.4K
 Electrochemical measurements are conducted in an electrochemical cell composed of various components that control and measure the current and potential. One fundamental component is electrodes, conductive materials that enable electron transfer reactions at their surfaces.
There are two main types of electrodes in electrochemical cells. The first type, known as the working or indicator electrode, has a potential that is sensitive to the analyte's concentration and reacts to changes in...
2.4K

You might also read

Related Articles

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

Sort by
Same author

Protocol to Induce the Temporary Opening of the Blood-Brain Barrier with Short-Time Focused Ultrasound in Rats.

Pharmaceutics·2023
Same author

Thermal Evaluation of Multi-Antenna Systems Proposed to Treat Bone Tumors: Finite Element Analysis.

Sensors (Basel, Switzerland)·2022
Same author

Anatomical 3D Modeling Using IR Sensors and Radiometric Processing Based on Structure from Motion: Towards a Tool for the Diabetic Foot Diagnosis.

Sensors (Basel, Switzerland)·2021
Same author

Computational FEM Model and Phantom Validation of Microwave Ablation for Segmental Microcalcifications in Breasts Using a Coaxial Double-Slot Antenna.

BioMed research international·2021
Same author

Synthesis, Characterization and Magnetic Hyperthermia of Monodispersed Cobalt Ferrite Nanoparticles for Cancer Therapeutics.

Molecules (Basel, Switzerland)·2020
Same author

An Application for Skin Macules Characterization Based on a 3-Stage Image-Processing Algorithm for Patients with Diabetes.

Journal of healthcare engineering·2019

Related Experiment Video

Updated: Dec 11, 2025

Conformable Wearable Electrodes: From Fabrication to Electrophysiological Assessment
10:03

Conformable Wearable Electrodes: From Fabrication to Electrophysiological Assessment

Published on: July 22, 2022

4.8K

Wearable Active Electrode for sEMG Monitoring Using Two-Channel Brass Dry Electrodes with Reduced Electronics.

J Antonio Ruvalcaba1, M I Gutiérrez2, A Vera1

  • 1Department of Electrical Engineering, Bioelectronics Section, CINVESTAV-IPN, Zacatenco, Mexico City 07360, Mexico.

Journal of Healthcare Engineering
|August 18, 2020
PubMed
Summary
This summary is machine-generated.

This study optimized dry active electrodes (AEs) for long-term surface electromyography (sEMG) recording without gel. The new design shows reliable performance for myoelectric control and clinical analysis.

More Related Videos

A Single-Channel and Non-Invasive Wearable Brain-Computer Interface for Industry and Healthcare
06:34

A Single-Channel and Non-Invasive Wearable Brain-Computer Interface for Industry and Healthcare

Published on: July 7, 2023

3.0K
Author Spotlight: Epimysial Electrode Fabrication and Testing in ACL Injury Studies
04:48

Author Spotlight: Epimysial Electrode Fabrication and Testing in ACL Injury Studies

Published on: April 12, 2024

757

Related Experiment Videos

Last Updated: Dec 11, 2025

Conformable Wearable Electrodes: From Fabrication to Electrophysiological Assessment
10:03

Conformable Wearable Electrodes: From Fabrication to Electrophysiological Assessment

Published on: July 22, 2022

4.8K
A Single-Channel and Non-Invasive Wearable Brain-Computer Interface for Industry and Healthcare
06:34

A Single-Channel and Non-Invasive Wearable Brain-Computer Interface for Industry and Healthcare

Published on: July 7, 2023

3.0K
Author Spotlight: Epimysial Electrode Fabrication and Testing in ACL Injury Studies
04:48

Author Spotlight: Epimysial Electrode Fabrication and Testing in ACL Injury Studies

Published on: April 12, 2024

757

Area of Science:

  • Biomedical Engineering
  • Signal Processing
  • Wearable Technology

Background:

  • Gel-based electrodes for surface electromyography (sEMG) suffer from increased impedance as the gel dries, limiting long-term use.
  • Dry active electrodes (AEs) offer a potential solution for continuous sEMG signal acquisition without gel dependency.
  • Variations in electrode-skin impedance significantly impact the quality and reliability of recorded sEMG signals.

Purpose of the Study:

  • To optimize the electronic design of a conventional dry active electrode (AE) for improved long-term sEMG signal recording.
  • To eliminate the need for electrolytic gel in sEMG acquisition systems.
  • To validate the performance and reliability of the optimized AE system for various applications.

Main Methods:

  • The electronic design of a conventional AE was optimized by removing the impedance coupling stage and two filters.
  • The optimized system comprised electrodes, a 250x amplification stage, a 2.2 Vdc offset, a low-pass filter, and an ADC with USART communication.
  • Key performance metrics including Common Mode Rejection Ratio (CMRR), output signal amplitude, system bandwidth, and Signal-to-Noise Ratio (SNR) were measured.

Main Results:

  • The optimized AE system demonstrated a CMRR of 96 dB, an output sEMG signal amplitude of approximately 1.6 Vp-p, and a system bandwidth of 15-450 Hz.
  • Repeatability measurements for seven movements across eleven volunteers showed an average SNR of 30.32 dB for wrist flexion.
  • The SNR for wrist flexion with the proposed AE was 49 dB, compared to 60 dB for a commercial system, indicating competitive performance.

Conclusions:

  • The optimized dry active electrode design provides a reliable and gel-free solution for long-term sEMG signal acquisition.
  • The developed system is suitable for applications requiring continuous sEMG monitoring, such as myoelectric prostheses, clinical analysis, and sports medicine.
  • Further improvements in SNR could enhance the system's performance for even more demanding applications.