Fig. 1

Representation of the BBT-VR-C, BBT-VR-HT and BBT-MR. This 4-panel figure simultaneously represents the virtual and mixed reality environment displayed in the systems and the movements performed by a healthy control subject to realize the task when interacting with the system. (a). This panel represent the BBT-VR-C. (b). This panel represents the BBT-VR-HT. (c). This panel represents the MD-MR. (d). This panel represents the evolution of controllers’ lateral and vertical position over a 60s trial of the BBT-VR-C. Motion executed by the hand from the moment of grasping a block to its successful release into the intended compartment within the virtual box are presented in green. Return movements to the compartment for the next block are presented in red