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ID 34013
FullText URL
Author
Yamamoto, Yoshitake
Isshiki, Hiromi
Abstract

The determination of impedance can be performed by means of a frequency-domain analysis or a time-domain analysis. The latter has the advantage of being able to measure instantaneously all the frequency characteristics of impedance. The method is hence well suited to obtain the biological impedance which changes with time. An instantaneous method of measuring skin impedance, by using time-domain analysis has thus been developed. The fast Fourier transform (FFT) of the step response for current to the skin can determine the palm impedance. This method can carry out the determination of the parameters of the palm skin impedance during a galvanic skin reflex (GSR), which is impossible by means of frequency-domain analysis

Keywords
bioelectric phenomena
electric impedance measurement
fast Fourier transforms
medical
signal processing
signal detection
skin
step response
time-domain analysis
transient
response
waveform analysis
Note
Digital Object Identifier: 10.1109/19.492772
Published with permission from the copyright holder. This is the institute's copy, as published in Instrumentation and Measurement, IEEE Transactions on, April 1996, Volume 45, Issue 2, Pages 483-487.
Publisher URL:http://dx.doi.org/10.1109/19.492772
Copyright © 1996 IEEE. All rights reserved.
Published Date
1996-4
Publication Title
Instrumentation and Measurement
Volume
volume45
Issue
issue2
Start Page
483
End Page
487
Content Type
Journal Article
language
English
Refereed
True
DOI
Submission Path
electrical_engineering/55