Methods: Up to 500 subjects will be pre-screened to enroll 100 subjects for screening and randomizing up to 50 subjects to analyze 20 completers. Subjects with mild AD and apathy will be randomly assigned to rTMS or sham treatment after consent. All subjects will be tested for memory, behavioral problems, functioning and caregiver burden. Apathy will be assessed using the Apathy Evaluation Scale. Memory, executive function, functional status and caregiver burden will be assessed. Subjects will receive daily treatments for 4 weeks with either rTMS or sham coil for a total of 20 treatments. Neither the subject nor the investigators will know which treatment the subject is receiving. Testing will be repeated at the end of 4 weeks and at 8 and 12 weeks after treatment.