Two-dimensional pseudospectral modeling of cardiac reentry

Most previous monodomain simulations have been performed with the finite-difference method. Due to the large computational requirement, unfortunately, an adequate discretization of a tissue with realistic dimensions is still difficult. Recently, a new pseudospectral method has been proposed which demonstrates a higher computational efficiency than the finite-difference method in modeling the cardiac propagation initiated by a point stimulation. Here, modeling of the more complex reentry phenomenon in a two-dimensional tissue using the new technique is studied. Details on the pseudospectral approach are presented together with computational performance results.