Our History

Jack Johnstone, Ph.D. is the President and CEO of Q-Metrx, Inc., responsible for all operations and development at Q-Metrx and the Valley Sleep Center. He is also an Associate Researcher in the department of Psychology at UCLA, as well as a consultant to Aspect Medical Systems, Inc. (see www.britemd.com). Download Jack Johnstone's current CV.

Technical Staff

Monica Coto, Ph.D. is a clinical report writer at Q-metrx, Inc. She completed her graduate degree in psychology at the University of California, Los Angeles with an emphasis in Cognitive Neuroscience.

Administrative Staff

Sophia Quintana has been the office manager at Valley Sleep Center for the past 10 years. She performs billing, scheduling and general office management. She has over 25 year’s of experience in the medical field and provides excellent customer service to patients, clients, physicians and co-workers with the utmost respect, care and professionalism. In her daily interaction with individuals she puts to use one of her many skills which is the ability to speak fluently English, Spanish and Armenian.

Marysol Benitez is an administrative assistant. She joined Q-Metrx in September 2011 and brings with her over 10 years of excellent customer service. She is bilingual, speaking both English and Spanish, and enjoys serving our patients and clients.

Laura Raushel has been the bookkeeper and administrative assistant for Q-Metrx since 1999.

EEG Technologists

Victoria Torres is an EEG Technologist and customer service representative at Q-Metrx. She received her B.S. in Biology with a concentration in Neuroscience from Sacred Heart University, Fairfield CT.

Stephen Johnson is an EEG technician who received his B.S. in cognitive neuroscience with an emphasis in neuroscience from UC San Diego.

Christine Turner is an EEG specialist trained at the Maudsley Clinic in London and Columbia University. She provides recording services at the lab in Burbank.

Kelly Cook is our newest EEG technician on staff.

Expert Neurological Consultants

Jason R. Soss, M.D. is a staff neurologist and Assistant Professor of Neurology at UCLA School of Medicine. He is trained as an epileptologist specializing in dense array monitoring and intracranial recording, and is engaged in a variety of EEG research studies.

Ronald E. Saul, M.D. is a highly experienced electroencephalographer, previously director of the EEG Laboratory at Los Angeles County Medical Center. He is a co-author of Neuropsychology for Health Care Professionals and Attorneys (3rd Ed). Dr. Saul is currently a Clinical Professor of Neurology at the UCLA School of Medicine and is on staff at the West Los Angeles Veterans Administration Medical Center and UCLA.

Roger V. Bertoldi, M.D. is a neurologist in private practice in Los Angeles, and a Clinical Assistant Professor of Neurology at UCLA. He has extensive experience in medical-legal applications of EEG and qEEG. Dr. Bertoldi specializes in evaluation and treatment of head trauma.