Fig. 1

Timing and BMI functioning. a) Timing of each trial of the experiment. Each trial starts with an inter trial interval (ITI) of 3 s followed by an auditory instruction period for the task (“Try to move the Left/Right hand”). 2 s after the instruction, a start cue is presented and 5 s later an end cue is presented. b) The patient’s EEG from ipsilesional electrodes is processed online and transformed into power of the sensorimotor rhythm (SMR). The BMI generates 2 distributions of data, one for resting (red area: during ITI) and one for trying to move (blue area: during task). The classification threshold is the middle between the 2 distributions mean (dashed line between the red and grey shaded areas). When the power of SMR is 5 consecutive times on the same side of the threshold (classified 5 consecutive time as rest or trying to move) the orthosis will change its status (from stop to move or move to stop)