A 25-year old man has made incredible progress after doctors "jump-started" his brain out of a coma using ultrasound. The team asserts that further study is needed to determine how effective this ultrasound technique really is, but they have high hopes.
As its name suggests, the treatment made use of sonic stimulation to stir up the neurons in the thalamus—the brain’s focal center for processing information. This was done because, as previous assertions likely made clear, doctors hoped that this would help “jump-start” his brain back to functionality. And notably, according to the UCLA Newsroom’s release, the patient has regained full consciousness and full language comprehension just after three days.
http://futurism.com/world-first-ultrasound-used-to-jump-start-patients-brain-out-of-a-coma/