Fig. 1

a Boxplots of reciprocal mean tracking error (TE) and reciprocal intra-individual variability of tracking error, by group and speed. b Reciprocal mean tracking error (mean TE) and intra-individual variability of TE (IIV of TE) by group and speed. Notes: error bars indicate standard error of the mean; reciprocal transforms mean larger quantities in these graphs denote less error