This study is being done to help the researchers gain experience in measuring the effects of repetitive transcranial magnetic stimulation (rTMS) on the heart rate, called heart rate variability (HRV) and pupillary size, called pupillometry (PLR) in depressed patients. The data will be used for future studies and grant submissions. Participants will be between the ages of 18 -75 and a total of 30 people will be enrolled in the study. During the first visit participants will complete brief questionnaires and cognitive assessments, followed by the HRV and PLR measurements and rTMS stimulations. Over the next four weeks the questionnaires and assessments will be repeated once per week to measure the participant's progress. HRV will be measured before and during one weekly rTMS session. At the end of six weeks of treatment the questionnaires and assessments will be repeated for the final time.