Fig. 3

Cybathlon BCI race completion time. a Race completion times (s) achieved by our pilot throughout training. Training effect is shown by the linear fit and the Pearson correlation coefficient (significance tested with Student t test distribution). Dashed horizontal line illustrate the maximum race completion time allowed during the competition. Vertical thin lines indicate the date of each racing session, while vertical thick black lines represent the dates of decoder update. The break of 1 year is marked by a vertical red line. Markers colored in green and red show the race completion times obtained during the two competitions, in the 2019 BCI Series and the 2020 Global Edition respectively. b Boxplot of race completion times (s) in the first and last 15 races of 2019 and 2020 training periods. The box edges signify the 75th (top) and 25th (bottom) percentiles and the horizontal line the median of the corresponding distribution. The whiskers extend to the largest and smallest nonoutlier values. Single-race values are marked with filled circles. Statistically significant differences are shown with Tukey-Kramer post-hoc test. c Boxplot of section crossing time (s, time spent on each section) in the first 15 races of 2019 and the last 15 races of 2020 training periods. The box edges signify the 75th (top) and 25th (bottom) percentiles and the horizontal line the median of the corresponding distribution. The whiskers extend to the largest and smallest nonoutlier values. Outliers are marked with black crosses, while single-section values with filled circles. Statistically significant differences are shown with two-sided Wilcoxon ranksum tests. * \(p<.05\), ** \(p<.01\), *** \(p<.001\)