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

You might also read

Related Articles

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

Sort by
Same author

Impact of baseline-pool local impedance on lesion formation using a local impedance-sensing catheter: Lessons from a porcine experimental model.

Journal of arrhythmia·2025
Same author

FPGA-Based Processor for Continual Capacitive-Coupling Impedance Spectroscopy and Circuit Parameter Estimation.

Sensors (Basel, Switzerland)·2022
Same author

A three-compartment non-linear model of myocardial cell conduction block during photosensitization.

Medical & biological engineering & computing·2021
Same author

Non-Contact Measurements of Electrocardiogram and Cough-Associated Electromyogram from the Neck Using In-Pillow Common Cloth Electrodes: A Proof-of-Concept Study.

Sensors (Basel, Switzerland)·2021
Same author

Capacitive-Coupling Impedance Spectroscopy Using a Non-Sinusoidal Oscillator and Discrete-Time Fourier Transform: An Introductory Study.

Sensors (Basel, Switzerland)·2020
Same author

A Novel Analog Front End with Voltage-Dependent Input Impedance and Bandpass Amplification for Capacitive Biopotential Measurements.

Sensors (Basel, Switzerland)·2020

Related Experiment Video

Updated: Oct 13, 2025

High-speed Continuous-wave Stimulated Brillouin Scattering Spectrometer for Material Analysis
07:55

High-speed Continuous-wave Stimulated Brillouin Scattering Spectrometer for Material Analysis

Published on: September 22, 2017

10.3K

Short-Time Impedance Spectroscopy Using a Mode-Switching Nonsinusoidal Oscillator: Applicability to Biological

Tomiharu Yamaguchi1, Emiyu Ogawa2, Akinori Ueno1

  • 1Department of Electrical and Electronic Engineering, Tokyo Denki University, Tokyo 120-8551, Japan.

Sensors (Basel, Switzerland)
|November 13, 2021
PubMed
Summary

This study introduces a novel mode-switching nonsinusoidal oscillator for impedance spectroscopy, enabling accurate bioimpedance measurements of tissues and continuous monitoring. The method effectively captures wide-frequency impedance spectra for various applications.

Keywords:
DFTbiological applicationcapacitive couplingcontinuous impedance measurementfrequency switchingimpedance spectroscopynonsinusoidal oscillator

More Related Videos

Fabrication and Testing of Microfluidic Optomechanical Oscillators
09:10

Fabrication and Testing of Microfluidic Optomechanical Oscillators

Published on: May 29, 2014

12.3K
High Speed Sub-GHz Spectrometer for Brillouin Scattering Analysis
13:31

High Speed Sub-GHz Spectrometer for Brillouin Scattering Analysis

Published on: December 22, 2015

15.2K

Related Experiment Videos

Last Updated: Oct 13, 2025

High-speed Continuous-wave Stimulated Brillouin Scattering Spectrometer for Material Analysis
07:55

High-speed Continuous-wave Stimulated Brillouin Scattering Spectrometer for Material Analysis

Published on: September 22, 2017

10.3K
Fabrication and Testing of Microfluidic Optomechanical Oscillators
09:10

Fabrication and Testing of Microfluidic Optomechanical Oscillators

Published on: May 29, 2014

12.3K
High Speed Sub-GHz Spectrometer for Brillouin Scattering Analysis
13:31

High Speed Sub-GHz Spectrometer for Brillouin Scattering Analysis

Published on: December 22, 2015

15.2K

Area of Science:

  • Electrical Engineering
  • Biomedical Engineering
  • Spectroscopy

Background:

  • Traditional impedance spectroscopy methods often face limitations in achieving wide frequency ranges and continuous measurement capabilities.
  • Accurate impedance measurement is crucial for characterizing biological tissues and monitoring dynamic changes.
  • Existing techniques may require complex instrumentation or are not suitable for real-time applications.

Purpose of the Study:

  • To develop and validate a novel impedance spectroscopy method utilizing a mode-switching nonsinusoidal oscillator.
  • To demonstrate the application of this method for measuring the impedance of biological tissues and enabling continuous impedance monitoring.
  • To achieve broad impedance spectra over a wide frequency range for enhanced analysis.

Main Methods:

  • Fabrication of a novel nonsinusoidal oscillator with binary counters and analog switches for mode switching.
  • Utilization of discrete-time Fourier transform to determine impedance spectra from oscillation waveforms at various frequencies.
  • Merging of odd-order harmonic spectral components up to the 19th order to obtain broad impedance spectra.

Main Results:

  • The proposed oscillator successfully generated impedance spectra over a wide frequency range.
  • Accurate estimation of resistive and capacitive components for bioimpedance simulation circuits was achieved.
  • The method effectively measured impedance changes in porcine myocardium due to coagulation and continuously monitored CdS photocell resistance variations.

Conclusions:

  • The mode-switching nonsinusoidal oscillator provides a robust and accurate method for impedance spectroscopy.
  • This technique is suitable for characterizing biological tissues and enabling continuous impedance measurements.
  • The developed method offers a promising approach for diverse applications requiring wide-frequency impedance analysis.