TMS stands for transcranial magnetic stimulation. It is an FDA-approved treatment for Major Depression that is effective, safe, non-invasive, and drug-free. The treatment involves short electromagnetic pulses, similar in strength to those in MRI machines, being targeted to the area of the brain known to be underactive in depression. During a standard TMS treatment, thousands of these pulses are delivered at intervals across a 30-minute session while the patient is awake and alert. Treatments are generally delivered five days a week over a period of 6-8 weeks.