ECGSIM: an Interactive Tool for the Study of the Relation between the Electric Activity of the Heart and the QRST Waveforms at the Body Surface

ECGSIM is an interactive computer program that solves the forward problem of electrocardiology. The user may set the depolarization and repolarization times at the heart surface, as well as the transmembrane potential amplitude. The program computes the resulting ECGs at the body surface. In this way, the effect of changes of the electric activity of the heart on the ECG can be studied. ECGSIM may be downloaded, free of charge, from the web.