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Power spectra with median frequency (MDF) (left panels) and recurrence plots with percent determinism (%DET) and percent recurrence (%REC) from recurrence quantification analysis (RQA, right panels) of sEMG signals for the non-fatigued (A) and fatigued (B) vastus lateralis muscle in one representative subject (personal data); analysis parameters are: N = 1024; τ = 4; m = 4; r = 15.
