A system of the present invention relates to performance evaluation of subjects or amputees undergoing rehabilitation through a procedure of Electromyography (EMG) to assess the health of muscles and nerve cells is disclosed. The system comprises of a display screen configured for displaying the image information comprising a plurality of START points and a plurality of TARGET points to perform a plurality of tests by a subject. The method of the system assists the subject to manage browsing activities and manage internet or a graphical user interface by using online virtual keyboards or on-screen key boards.
