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. Author manuscript; available in PMC: 2020 May 1.
Published in final edited form as: IEEE Trans Neural Syst Rehabil Eng. 2019 Mar 18;27(5):1043–1052. doi: 10.1109/TNSRE.2019.2906030

Fig. 6:

Fig. 6:

PSD of the stochastic muscle activation scheme versus firing rate for the TA muscle. Strong frequency components can be observed in the range in which active GMUs are firing. Low frequency components are present at any level of activation.