Fig. 3

a Boxplot of Just-Noticeable Difference (JND) position sense thresholds at pretest, posttest and retention for both groups. Each box indicates the interquartile range (IQR). The line within the box indicates the median. Whiskers represent the 1st and 99th percentile. Adjacent diamond symbols show all individual subject JNDs. b Correlation between JND thresholds at pretest in relation to change in JND at retention. A negative value indicates a reduction in threshold, i.e. an improvement in proprioceptive acuity. c Change in JND for each participant as a function of training. Data are sorted in ascending order for the pretest value. Grey and white circles indicate the related values at posttest and retention