Figure 11.

Box plot of the correlations between neural modality and EMG (±SD). Neural modalities include population, community detection ensemble (CD ens), preferred phase of firing ensemble (PPF ens) and single unit. Absolute, significant correlation values to ipsilateral and contralateral flexor and extensor muscle EMGs were grouped in these comparisons. Both the community detection and the PPF ensemble modalities showed a significantly greater median correlation to EMGs than the population and single unit median correlations. Both community detection ensemble and PPF ensemble correlation medians were significantly greater than the population and single-unit correlation medians (indicated by the *). The preferred phase of firing ensemble median correlation was significantly higher than the community ensemble median correlation but the population and single unit median correlations were not significantly different from each other [Kruskal–Wallis, df = 488, P = 4.2e-18, multiple comparisons test with Bonferroni correction (α = 0.05)].