Modern Medicine, Biblical Technology, and the Brain: A six part seminar recorded live September, 2012. In Session 5, Christian psychiatrist Dr. Tim Jennings, board certified by the American Board of Psychiatry and Neurology and the American Board of Psychiatry and Neurology with a private practice in Chattanooga, TN, discusses the neuro chemical mechanisms of depression and the technology of transcranial magnetic stimulation (TMS) as a drug free treatment for medication resistant depression.