I have 30 years of experience, and specialize in the field of surgical neurophysiology with specific knowledge in the areas of spine surgery, intracranial surgery, pediatric neurosurgery and scoliosis. I have published on such topics as scoliosis, evoked potential monitoring, acoustic neuroma surgery and surgical positioning injuries. I have testified 20 times on topics such as paralysis, intraoperative neurophysiological monitoring, positioning injuries during surgery and scoliosis surgery. I am among the worlds leading expert on intraoperative neurophysiological monitoring during spine and brain surgery in children and adults.