Procedure: Sham rTMS (same parameters but with coil elevated and angled away from the head) every day for 10 consecutive days (5 days/week).
Procedure: Real rTMS(20 Hz, 10 trains, inter train interval 30 sc with total pulses 2000, intensity 80% of motor threshold) daily for 10 consecutive days (5 days/week)
Procedure: 20 Hz, 10 s, 10 trains with inter-train interval 30 s 2000 pulses , intensity 80% over hand area daily for 10 consecutive days (5 days/week).
Procedure: sham rTMS (same parameters but with coil elevated and angled away from the head)every day for ten consecutive days (5 days/week).