Dougan, Elisheba, MD

Krista Hanson, PhD is an associate professor of neuropsychology and the Director of Training for the Postdoctoral Residency Programs in the Department of Neuropsychology at Barrow Neurological Institute in Phoenix, AZ. She is board certified in clinical neuropsychology and specializes in geriatric neuropsychology and neurodegenerative disorders, including the assessment of mild cognitive impairment and dementia. Dr. Hanson also has expertise in movement disorders and pre- and postsurgical evaluations for deep brain stimulation candidates and individuals with normal pressure hydrocephalus. With memberships in various professional organizations, including the American Psychological Association and the International Neuropsychological Society, Dr. Hanson is actively involved in research on cognitive aging, Alzheimer's disease, and neuropsychiatric symptoms in Parkinson's disease and other movement disorders.Generated from the website

Alexander Tröster, PhD, is a professor of neuropsychology and chair of the Department of Neuropsychology at Barrow Neurological Institute at Dignity Health St. Joseph’s Hospital and Medical Center in Phoenix. Dr. Tröster is board certified by the American Board of Professional Psychology in the specialty of clinical neuropsychology. Dr. Tröster’s expertise includes movement disorders, especially Parkinson’s disease, dementia, amnesia, and neuropsychological assessment in stereotactic and functional neurosurgery. He is a fellow of the American Psychological Association, the National Academy of Neuropsychology, and a member of several other professional societies. Dr. Tröster received his doctorate from the University of California-San Diego and San Diego State University in California in clinical psychology and completed his internship at Long Island Jewish Medical Center in New York. Dr. Tröster’s research studies include the assessment, definition, and neural bases of mild cognitive impairment in Parkinson’s disease, and the evaluation and prediction of neurobehavioral outcomes of deep brain stimulation for a variety of neurological and psychiatric conditions.

Suzanne O’Connor, PsyD, is a rehabilitation neuropsychologist in the Department of Clinical Neuropsychology at Barrow Neurological Institute. Dr. O’Connor’s expertise includes neuropsychological assessment and cognitive rehabilitation therapy with patients adjusting to acquired brain injuries. She has extensive experience in substance abuse, behavioral addictions, and brain injury and substance abuse. She is a member of the American Psychological Association, the Arizona Neuropsychological Society, and Division 22: Rehabilitation Psychology. Dr. O’Connor earned her master’s and doctorate degrees in clinical psychology from the Arizona School of Professional Psychology at Argosy University in Phoenix. She completed her postdoctoral residency at Rehab Without Walls in Phoenix. Dr. O’Connor’s research interests include the assessment of behavioral addictions and assessment development. Her latest interests focus on rehabilitation outcome data and the study of grief as an aspect of brain injury recovery.