On The Dr. Oz Show, Dr. Oz explains how Transcranial Magnetic Stimulation (TMS) works to treat depression. He explains the mechanisms that are targetted and how the coil delivers magnetic stimulation to alter the electrical pathways in the brain. Not only does the stimulation enhance neuronal activity, but it also increases blood flow to the brain by enlarging the blood vessels. Tarique Perera MD, a psychiatrist who prescribes TMS for depression, explains how this therapy is the first biologically based treatment for depression. A live demo is also shown in part 2 in the link below.
Part 2 (live demo):