Manuscript received October25;
1987;
revised June 13;
1988. This was supported in part by the National Institutes of Health Research Grant HL-28429;
SCOR Grant HL-17670. and Training Grant HL-07063. F. J. Claydon;
111;
is with the Department of Electrical Engineering;
Memphis State University;
Memphis;
TN 38152. T. C. Pilkington is with the Department of Biomedical Engineering;
Duke University;
Durham;
NC;
27710;
A;
S;
L;
Tang;
M;
N;
Morrow;
and R. E. Ideker are with the Departments of Pathology and Medicine;
Duke University Medical Center;
Dur-;
ham;
NC 27710. IEEE Log Number 8823291.He is the recipient of a Canadian Heart Foundation fellowship for electrophysiology research at Duke University Medical Center. Durham;
NC. His main research interest is in the mechanism and treatment of cardiac arrhythmias;