A comparison of volume conductor effects on body surface Laplacian and potential ECGS: a model study

The objective of this investigation is to study, using a computer model, the torso volume conductor effects on body surface potential electrograms and body surface Laplacian electrograms. A spherical volume conductor model was used to approximate the torso and the heart. Myocardial electrical events were approximated by two distributed dipole-layers representing activation wavefronts propagating from the endocardium to the epicardium. The present computer simulation results indicate that the body surface Laplacian maps provide enhanced performance over the body surface potential maps in resolving the configurations of two activation wavefronts over the anterior wall of the heart.