1 7.1 Introduction
The modeling of the electric current sources during depolarization by means of the uniform double layer (UDL) is described in general terms in Chap. 5, and in greater detail in Chap. 6. It is linked to the electrophysiology of wave fronts propagating through the myocardium. Some decades ago [1, 2], studies appeared that exploited the equivalence between the actual double layer at the wave fronts and a source description on the heart surface, the surface bounding the myocardium. This source description has been found to be very effective in the inverse determination of the timing of depolarization on the basis of observed body surface potentials (Chap. 9), a method now commonly referred to as activation time imaging.
Around the same period [3], the development of a source model started in which the equivalent cardiac electric generator is expressed in terms of the electric potentials on a surface encompassing the myocardium, similar to the pericardium. In most...
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van Oosterom, A. (2010). The Equivalent Double Layer: Source Models for Repolarization. In: Macfarlane, P.W., van Oosterom, A., Pahlm, O., Kligfield, P., Janse, M., Camm, J. (eds) Comprehensive Electrocardiology. Springer, London. https://doi.org/10.1007/978-1-84882-046-3_7
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