I have 30 years of experience, and specialize in the field of neuropsychology with specific knowledge in the areas of the effects of trauma on behavior, the treatment of chronic pain with biofeedback and the structure of post-traumatic stress disorder (PTSD) symptoms. I have published on such topics as neuropsychological assessment, brain injury, the treatment of chronic pain and the structure of symptoms of PTSD. I have testified 20 times on topics such as head injury, chronic pain and placement after injury.