Drs. Abildskov, Burgess, and Lux demonstrate the conditions of increased local disparity of ventricular recovery which increase vulnerability to arrhythmia can be detected by analysis of the body surface electrocardiogram.
Urie PM, Burgess MJ, Lux RL, Wyatt R, Abildskov JA. The electrocardiographic recognition of cardiac states at high risk of ventriculararrhythmias: An experimental study in dogs.Circulation Research, 42 (3), 350-358, 1978