Methods: With five unilateral trans

Methods: With five unilateral transradial (TR) amputees, the EMG signals and tri-axial accelerometer
mechanomyography (ACC-MMG) signals were simultaneously collected from both amputated and intact arms
when performing six classes of arm and hand movements in each of five arm positions that were considered in the
study. The effect of the arm position changes was estimated in terms of motion classification error and compared
between amputated and intact arms. Then the performance of three proposed methods in attenuating the impact
of arm positions was evaluated.