Fig 7 -

Distribution across the Tth-ranked MU population of the maximum values at 30% MVC of the MU activation states ak (A) and MU forces (B-D) simulated with the MN-driven neuromuscular model. The model either received as neural input the Nr = 81 experimental spike trains (green triangles in A for ak; plots B and C for ) or the discharge activity of the complete pool of N = 400 MUs (red dots in A for ak; plot D for ). In B-D, the black dots represent the distribution of the MUs’ maximum forces , which is continuous for the completely reconstructed pool (D). In B and C, the Nr identified MUs were assigned representative maximum forces (black dots) to account for the force-generating properties of the MUs not identified experimentally. To do so, in B, the Nr identified MUs were assumed to be homogeneously distributed across the Tth-ranked MU pool, while they were accurately mapped to the real pool with Eq 6 in C. In B, the non-continuous distribution of the values is explained by the fact that is not an integer value in Eq 19.