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Figure 1.The transmembrane potential as a function of x and y. The electrode is above the center of the sheet, and the x direction is horizontal. Only the central 10 mm × 10 mm is displayed. λx = λy = 1 mm.

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Figure 2.The transmembrane potential as a function of x and y. The electrode is above the center of the sheet, and the x direction is horizontal. Only the central 10 mm × 10 mm is displayed. The color scale is the same as in Fig. 1. λx = 1 mm and λy = 0.

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Figure 3.The transmembrane potential as a function of x and y. The electrode is above the center of the sheet, and the x direction is horizontal. Only the central 10 mm × 10 mm is displayed. The color scale is the same as in Fig. 1. λx = 1 mm and λy = 0.4 mm.

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Figure 4.The peak depolarization under the electrode, as a function of distance from the electrode to the tissue sheet, d, for λx = 1 mm and λy = 0.4 mm. The dashed line has a slope of -2 in this log-log plot.

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