Fig. 1

Schematic of the body-machine interface (a) 4 IMUs are attached to the upper body that measure movement of the upper body. b These signals are transformed by a map A into the x-y position of a cursor. c The position of the cursor is displayed on a screen and the participant is asked to move the cursor to different targets. d Schematic of the experimental protocol in one session – after an initial calibration phase, participants are asked to perform a series of training and test blocks to evaluate motor learning. The calibration block was only performed on the first experimental session, whereas the remaining blocks were performed in each experimental session