scispace - formally typeset
Search or ask a question

Showing papers by "National Security Agency published in 1968"

Journal Article•DOI•
On-Line Subtraction of the Cardiac Activity from the Esophageal Electromyogram of the Diaphragm

[...]

Edward P. Mueller1, Ruy V. Lourenco2•
National Security Agency1, University of Illinois at Chicago2
01 Apr 1968-IEEE Transactions on Biomedical Engineering
TL;DR: A system is described whereby the integrated electrocardiogram is automatically subtracted from the total integrated electrical activity recorded in the esophagus, and a measure of the electrical activity in the diaphragm is obtained, and the output from the respiratory center can be studied independently of mechanical alterations of chest wall and lungs.
Abstract: A system is described whereby the integrated electrocardiogram is automatically subtracted from the total integrated electrical activity recorded in the esophagus. By this method, a measure of the electrical activity in the diaphragm is obtained, and the output from the respiratory center can be studied independently of mechanical alterations of chest wall and lungs.

9 citations