This experimental technique that is being described above that is designed as a treatment for depression is called TRANSCRANIAL MAGNETIC STIMULATION. This stimulates certain regions of the brain. It does not induce seizures and no anesthetic is needed in this kind of procedure.
There was no single event that ended the Great Depression, but most would agree it was a combination of New Deal policies, and World War II (which created soaring demand for materials and thus jobs in the United States) that ended the Great Depression.