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Figure 2


Fig. 2. Results of the principal component analysis. (A) The first two principal components (PCI, solid black line; PCII, broken black line) defined from the partitioned myoelectric spectra of all muscles under all conditions (N=245 740). (B) Vector representation of the spectra reconstructed from the PC weightings shown in A, with PCI –0.76 PCII (red) and PCI +0.54 PCII (blue), indicating the angle {theta}.