Coactivation density is defined as the total number of trunk EMG channels (trunk segments) co-activated per site (x,y) in the trunk motor cortex. (A). Total trunk coactivation density. Normal group is significantly different than spinalized groups. No significant difference between the three spinalized groups. (B). Segmental coactivation density for each segment. Normal group is significantly different than spinalized groups for Mid thoracic and Lumbar. No significant difference between the three spinalized groups. (C). Dorsal and Ventral coactivation density. Normal group is significantly different than spinalized groups for Ventral. No significant difference between the three spinalized groups. (*p<0.05, 1-way ANOVA with Bonferroni corrected post hoc comparisons, ** p<0.05, t-test normal v/s all spinalized combined, *** p<0.05, 1-way KRUSKAL WALLIS with Bonferroni corrected post hoc comparisons, curly brace indicates combined into 1 group, data expressed as mean ± SEM).