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  1. Figure 7. Prosthesis preference related to change in stride-to-stride fluctuations at prosthetic ankle. Attractors for prosthetic ankle of (a) preferred and (b) nonpreferred prosthesis of an example individual show how an increase in stride-to-stride fluctuations (i.e., increased Lyapunov exponent) reflects greater disorganization. Specifically, note how trajectories of preferred prosthetic ankle movement (a) lie closer together in state space due to more consistent movement. Trajectories of nonpreferred prosthetic ankle movement (b) do not lie as close together, with increased likelihood of stray trajectories that are more dissimilar from previous and future trajectories. Wurdeman SR, Myers SA, Jacobsen AL, Stergiou N. Prosthesis preference is related to stride-to-stride fluctuations at the prosthetic ankle. J Rehabil Res Dev. 2013; 50(5):671–86. http://dx.doi.org/10.1682/JRRD.2012.06.0104

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