Figure 6

Locomotor complexity. A: Permutation entropy for unaveraged limb trajectories (gray, 5–12 cycles per animal, n=6 per group; Mean ± SD) and averaged trajectories (black, n=5 per group; Mean ± SEM). Lower values indicate lower complexity. As averaging removes information, the averaged data have lower complexity. A decrease in ankle complexity was noted in both the averaged and unaveraged data. An increase in complexity was note in the knee but only for the averaged data. This may indicate that the changes in the knee were in step-to-step variation only. (*) indicates p<0.05. B: Percent of variance accounted for by all three principal components from PCA analysis. Larger PC1 indicates lower complexity. No significant differences were noted. n = 5 per group.