Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

Instrumentation Amplifier

Instrumentation Amplifier

An electrocardiography (ECG) machine is an essential piece of medical equipment used to monitor the electrical activity of the heart. It operates by detecting small electrical changes on the skin that result from the depolarization of the heart muscle during each heartbeat. However, these signals are in the microvolt range and can be easily overwhelmed by noise or interference.
To overcome this challenge, an ECG machine utilizes an instrumentation amplifier. This specialized amplifier is...

You might also read

Related Articles

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

Sort by

Same author

Influence of artificial intelligence on ophthalmologists' judgments in glaucoma.

PloS one·2025

Same author

Identification of a Person in a Trajectory Based on Wearable Sensor Data Analysis.

Sensors (Basel, Switzerland)·2024

Same author

Non-Contact Breathing Monitoring Using Sleep Breathing Detection Algorithm (SBDA) Based on UWB Radar Sensors.

Sensors (Basel, Switzerland)·2022

Same author

Chiba Tendril-Less locus determines tendril organ identity in melon (Cucumis melo L.) and potentially encodes a tendril-specific TCP homolog.

Journal of plant research·2015

Same author

Local reflexive mechanisms essential for snakes' scaffold-based locomotion.

Bioinspiration & biomimetics·2012

Same author

A decentralized control scheme for an effective coordination of phasic and tonic control in a snake-like robot.

Bioinspiration & biomimetics·2011

Search research articles

Related Experiment Video

Updated: Oct 30, 2025

Conformable Wearable Electrodes: From Fabrication to Electrophysiological Assessment

Conformable Wearable Electrodes: From Fabrication to Electrophysiological Assessment

Published on: July 22, 2022

Noise-Reducing Fabric Electrode for ECG Measurement.

Takamasa Terada¹, Masahiro Toyoura¹, Takahide Sato²

¹Department of Computer Science and Engineering, University of Yamanashi, Kofu, Yamanashi 400-8511, Japan.

Sensors (Basel, Switzerland)

|July 2, 2021

Summary

This study introduces a novel fabric electrode structure that acts as a noise reduction filter for electrocardiogram (ECG) measurements. The innovative design significantly improves signal quality during both rest and exercise, enhancing diagnostic accuracy.

Keywords:

denoising electrocardiography textile

More Related Videos

Fabrication of High Contact-Density, Flat-Interface Nerve Electrodes for Recording and Stimulation Applications

Fabrication of High Contact-Density, Flat-Interface Nerve Electrodes for Recording and Stimulation Applications

Published on: October 4, 2016

Fabrication of Fine Electrodes on the Tip of Hypodermic Needle Using Photoresist Spray Coating and Flexible Photomask for Biomedical Applications

Fabrication of Fine Electrodes on the Tip of Hypodermic Needle Using Photoresist Spray Coating and Flexible Photomask for Biomedical Applications

Published on: November 28, 2017

Related Experiment Videos

Last Updated: Oct 30, 2025

Conformable Wearable Electrodes: From Fabrication to Electrophysiological Assessment

Conformable Wearable Electrodes: From Fabrication to Electrophysiological Assessment

Published on: July 22, 2022

Fabrication of High Contact-Density, Flat-Interface Nerve Electrodes for Recording and Stimulation Applications

Fabrication of High Contact-Density, Flat-Interface Nerve Electrodes for Recording and Stimulation Applications

Published on: October 4, 2016

Fabrication of Fine Electrodes on the Tip of Hypodermic Needle Using Photoresist Spray Coating and Flexible Photomask for Biomedical Applications

Fabrication of Fine Electrodes on the Tip of Hypodermic Needle Using Photoresist Spray Coating and Flexible Photomask for Biomedical Applications

Published on: November 28, 2017

Area of Science:

Biomedical Engineering
Wearable Sensors
Signal Processing

Background:

Fabric electrodes are used for long-term ECG monitoring due to flexibility and non-invasiveness.
High skin-electrode impedance in fabric electrodes often introduces noise into ECG signals.
Conventional noise reduction methods involve attaching external components, which can be cumbersome.

Purpose of the Study:

To develop a novel fabric electrode with an integrated noise reduction capability.
To improve the signal-to-noise ratio (SNR) in ECG measurements using a structurally modified fabric electrode.
To evaluate the effectiveness of the proposed electrode during rest and exercise conditions.

Main Methods:

A fabric electrode was designed with a folded structure to create an intrinsic capacitance of approximately 3 nF.
This capacitance, combined with skin-electrode impedance, forms a low-pass filter to reduce noise.
Prototype electrodes were fabricated and tested for ECG measurements during rest and electrically induced muscle activity (EMG).

Main Results:

The proposed fabric electrode demonstrated improved SNR by approximately 12.02 dB at rest.
During EMG-induced exercise, the SNR improved by about 10.29 dB compared to standard fabric electrodes.
The structural modification effectively reduced noise without external filtering components.

Conclusions:

Changing the fabric electrode's structure is an effective method for noise reduction in ECG measurements.
The proposed electrode offers a simpler and potentially more reliable approach to obtaining cleaner ECG signals.
This technology has the potential to enhance the accuracy and usability of wearable ECG monitoring systems.