isopotential map was obtained every 3 msec after the onset of ventricular activation from 85 unipolar lead ecgs of a normal subject ( measured map ) and similar map at the corresponding instant ( simulated map ) was also obtained by means of mathematical calculation under the assumption that the cardiac electromotive force can be represented by a single electric dipole fixed at the heart center .
C0018827
ventricular
C0018787
heart