 Each rTMS stimulation session will last for about 30 minutes, 2 consecutive days a week for 2 weeks. Both immediately prior to the onset of the first rTMS session, and just after the end of the fourth and final rTMS session, subjects will be tested on their cognitive and language skills. These two testing sessions will last 30 minutes each. Subjects will have another fMRI scan anytime during the 2 days after the fourth and final rTMS stimulation session. 