A new look at the amplification of gastric electrical signals

Author

Mintchev, Martin P. ; Bowes, Kenneth L.

Author_Institution

Dept. of Surg., Alberta Univ., Edmonton, Alta., Canada

Volume

2

fYear

1995

fDate

20-23 Sep 1995

Firstpage

1653

Abstract

Amplification of gastric electrical signals (GEA) deserves another look when efforts are made to convert electrogastrography into an objective clinical tool. The aim of this work was to underline the requirements for proper amplification of GEA signals. The suggested computer-controlled GEA amplifier is galvanically isolated and has flexible frequency and gain ranges. Special measures were taken to provide high common-mode rejection ratio and input impedance. The amplifier was subjected to several tests using simulation software prior to implementation and conventional testing methods after that

Keywords

amplifiers; bioelectric potentials; biomedical electronics; medical signal processing; computer-controlled amplifier; electrodiagnostics; flexible frequency range; flexible gain range; galvanically isolated amplifier; gastric electrical signals amplification; high common-mode rejection ratio; input impedance; objective clinical tool; simulation software; Abdomen; Computational modeling; Differential amplifiers; Electrodes; Filtering; Frequency; Low pass filters; Surges; Switches; Testing;

fLanguage

English

Publisher

ieee

Conference_Titel

Engineering in Medicine and Biology Society, 1995., IEEE 17th Annual Conference

Conference_Location

Montreal, Que.

Print_ISBN

0-7803-2475-7

Type

conf

DOI

10.1109/IEMBS.1995.581228

Filename

581228