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. Author manuscript; available in PMC: 2013 Oct 1.

Published in final edited form as: Exp Brain Res. 2012 Aug 31;222(4):455–470. doi: 10.1007/s00221-012-3232-3

Fig 4 — The initial rate of change of the center of pressure (CoP) was calculated as the slope of the anterior-posterior direction CoP between 100 and 200 ms following the perturbation. Data are group means and 95% confidence intervals by condition. Figure 4a presents the effects of magnitude (predictable small vs. predictable large). Figure 4b presents the effects of predictability (predictable vs. unpredictable-in-magnitude). The star indicates conditions that were significantly different from each other. PD = Parkinson’s disease

Fig 4 — The initial rate of change of the center of pressure (CoP) was calculated as the slope of the anterior-posterior direction CoP between 100 and 200 ms following the perturbation. Data are group means and 95% confidence intervals by condition. Figure 4a presents the effects of magnitude (predictable small vs. predictable large). Figure 4b presents the effects of predictability (predictable vs. unpredictable-in-magnitude). The star indicates conditions that were significantly different from each other. PD = Parkinson’s disease