Selection time The selection time between classifiers per movement (top) and subjects (bottom) are presented in box plots where the central mark represents the median value; the edges of the box are the 25th and 75th percentiles; the whiskers give the range of data values without considering outliers for clarity; and solid markers represent the mean. The selection time reflects how fast the controller can produced the first correct prediction. It considers the time window (200 ms) and the time required for signal processing and classification. The average selection times for LDA, MLP and RFN were 0.62 (±0.24) s, 0.81 (±0.27) s, and 0.63 (±0.22) s, respectively. Statistical significance (p<0.05) is shown only for the average values by “ * ”.