2. EEG signals are recorded using a cap providing 64 electrodes positioned according to the International 10/10 System; EMG activity is simultaneously recorded from pairs of Ag/AgCl surface electrodes placed bilaterally 2-3 cm apart over the deltoid anterior and the triceps muscles during reaching, and biceps and the brachioradialis muscles during the hand-to-mouth movement. The EEG and EMG data are acquired using a Neuroscan system at a sampling frequency of 512 Hz (band-pass filters: 1-200 Hz). Event Related Desynchronization/Synchronization (ERD/ERS) analysis is performed to quantify the movement related power change of the EEG oscillatory activity in alpha and beta bands over the premotor and primary sensorimotor areas.