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| Comparison of extracellular current densities computed during extracellular stimulation of a 3d bidomain block both with (right) and without (left) transmural fiber rotation. The current density isosurface in yellow indicates 1% of peak current density, while the current flowlines are displayed in red. The stimulation was through extracellular point electrodes (anode and cathode) located on the bottom face of the block on the left and right edges. Note how in the tissue with rotated fibers that the current flowlines are asymmetric and that the isosurface is broader in the middle of the block away from the electrodes. |