Fig. 1

The AR system with closed-loop control. Pattern classification is applied on a multichannel EMG recorded using Myo armband to estimate user motion intention and command a virtual (left) or real prosthesis (right). The virtual prosthesis is sensorized and the data from the sensors are acquired and presented to the subject as visual feedback (e.g., a graphical bar embedded within a real scene).The functions shown as dotted boxes have not been implemented in the presented system, but they can be added subsequently for corresponding hardware via existing interfaces