Date of this Version
Thesis (M.S.)—University of Nebraska—Lincoln, 1965. Department of Electrical Engineering.
The literature concerning the electrical field, which accompanies the electrical activation of the human heart, has been reviewed, and more than seventy articles have been selected on the basis of presentation of original thinking.However, since the physical science concerning electric fields was set forth in essentially its present form by Maxwell nearly a century ago, the notion of originality has to do with application of well-known principles to a new problem.Perhaps the most striking impression to be gained from the historical review is the slowness of this application of known scientific principles to the study of electrocardiography; even though the original workers in the field recognized the necessity of such an approach.
The experimental study involves the production of a gas bubble in a portion of the stomach, which was herniated behind the heart in a human subject.Since the gas bubble had simple geometry and known boundary conditions, the theoretical effects of the production of the gas bubble were readily determined.The introduction of a large insulating body behind the heart can be expected to displace the electric field forward.The experimental study indicated that this was the case.
Advisor: Edwin C. Lowenberg