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. Author manuscript; available in PMC: 2009 Sep 26.
Published in final edited form as: IEEE Trans Neural Syst Rehabil Eng. 2007 Mar;15(1):94–103. doi: 10.1109/TNSRE.2007.891392

Fig. 8.

Fig. 8

Summary of the VAF values for each element of the impedance spectral estimate and the R2 values of the entire estimate for test configurations sa1 to sa9. Off-diagonal elements of VAF for sa4 and sa5 are numerically ill-conditioned because the inertia and stiffness matrices are isotropic (ideally, the off-diagonal elements are identically equal to zero).