alexander taghva center for neurorestoration, university of southern california, los angeles, usa; orange county neurosurgical associates, mission viejo, usa; orange county neurosurgical associates, mission viejo, usa. tel: +1-9493887190 robert silvetz newport brain research laboratory, newport beach, usa alex ring center for neurorestoration, university of southern california, los angeles, usa; newport brain research laboratory, newport beach, usa keun-young a. kim orange county neurosurgical associates, mission viejo, usa kevin t. murphy department of radiation oncology, university of california, san diego, la jolla, usa charles y. liu center for neurorestoration, university of southern california, los angeles, usa; department of neurosurgery, university of southern california, los angeles, usa