Through the use of hyperbaric, oxygen-rich chambers, medical researchers have found a way to restore a significant amount of neurological function in brain tissue thought to be chronically damaged by stroke, traumatic injury, and metabolic disorder — even years after the original injury.
Reference
American Friends of Tel Aviv University. (2013, January 23). Oxygen chamber can boost brain repair years after stroke or trauma. ScienceDaily. Retrieved May 5, 2016 from www.sciencedaily.com/releases/2013/01/130123144218.htm