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In this paper, a strategy for pathological tremor compensation based on co-contraction of antagonist muscles induced by Functional Electrical Stimulation (FES) is presented. Although one of the simplest alternatives to apply FES for reducing the effects of tremor, the contribution of different co- contraction levels for joint motion and impedance must be accurately estimated, specially since tremor...
The force transmission dynamics of a cat's muscle tendon and ankle joint were studied in vivo using electrical muscle stimulation as the activation mode. The orderly recruitment of motor units and their firing rate were varied sinusoidally to evoke sinusoidal muscle force oscillations over a range of frequencies from 0.4 to 6 Hz. The effect of tendon viscoelasticity was studied by performing this...
The frequency response models of the soleus (slow) and m. gastrocnemius (fast) muscles subjected to four types of firing rate and recruitment control strategies applied by electrical stimulation were determined under isometric conditions. Orderly recruitment of motor units was applied concurrently with firing rate increase to elicit 50% and 100% of the initial force to simulate realistic physiological...
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