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Potential distributions at 10 ms after the onset of the Q wave. (a) Measured cylindrical cage potentials. (b, c) Inversely computed cylindrical cage potentials using first (FOT) and second (SOT) order Tikhonov regularizations, (d, e) first (FTSVD) and second (STSVD) order truncated singular value decomposition methods, and (f, g) total variation algorithms with a gradient (FTV) and a Laplacian operator (STV), respectively.
