Figure 5From: Compression of high-density EMG signals for trapezius and gastrocnemius muscles Time differentiation and contraction forces. Effect of time differentiation on two contraction forces: a) monopolar signal (M k ), b) single-differential signal (S k ) and c) time-differences (Δ k ) of single-differential signal for 20%MVC; d) M k , e) S k and f) Δ k signals for 80%MVC.Back to article page