Figure 4
From: Systematic changes in position sense accompany normal aging across adulthood
Effect of age on hand-based parameters of position sense. Each dot represents one arm of a participant. A, B, Variability (Var xy ) of the dominant ( A ) and non-dominant ( B ) arms. C, Systematic shifts (Shiftxy). D, Spatial Contraction/Expansion (C/E). E, F, Absolute error (AExy) of males ( E ) and females ( F ). In each panel, parameter values are plotted in their native untransformed units even if they were transformed to attain a normal distribution of residuals during the regression analyses. Values of the representative participants from Figure 3 are shown with an X. Lines show the median (thick line), inter-quartile range (medium thickness lines), and central 95% confidence interval (thin lines) obtained from the regression analysis.