The benefit of hyperbaric oxygen in stroke patients likely results from its ability to enhance the metabolism of so-called “idling nerve cells” as well as increasing oxygen supply surrounding the area of maximal damage.
K.K. Jain, Role of Hyperbaric Oxygenation in the Management of Stroke,Textbook Of Hyperbaric Medicine, 6thEdition, Editor: K.K. Jain, Springer Publisher, Cham, Switzerland, 2017.
https://www-ncbi-nlm-nih-gov.ezproxy.lsuhsc.edu/pubmed/7394869 (An early review of 122 stroke cases treated by Dr. Neubauer).