All participants will receive 40 sessions of treatment (45-minute) for 8 consecutive weeks (5 days/week). The robotic exercises will be carried in passive modality (15 minutes), passive/plus (15 minutes), assisted modality (15 minutes).

All participants will receive 40 sessions of treatment (45-minute) for 8 consecutive weeks (5 days/week). The control group will receive the same amount of training by physiotherapist skilled in occupational tharapy.

To understand the cortical modifications related to movement preparation and execution after robot-assisted training we will study the EEG modifications of cortical activity using time-frequency event-related EEG and task-related coherence (TRCoh).

Friedman ANOVA with post-hoc t-test (corrected for multiple comparisons) will be used to assess the significance of training-induced changes in the two groups.

Administered by asking the client to take the pegs from a container, one by one, and place them into the holes on the board, as quickly as possible. Participants must then remove the pegs from the holes, one by one, and replace them back into the container. The board should be placed at the client's midline, with the container holding the pegs oriented towards the hand being tested. Only the hand being evaluated should perform the test. Hand not being evaluated is permitted to hold the edge of the board in order to provide stability. Scores are based on the time taken to complete the test activity, recorded in seconds. Alternative scoring - the number of pegs placed in 50 or 100 seconds can be recorded. In this case, results are expressed as the number of pegs placed per second. Stopwatch should be started from the moment the participant touches the first peg until the moment the last peg hits the container.

Assessment of EEG modifications of cortical activity using time-frequency event-related EEG and task-related coherence (TRCoh).