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Maurice M. Ohayon, M.D., D.Sc., Ph.D.


Dr. Maurice Ohayon is Chief of the Division of Public Mental Health and Population Sciences and Professor in the Department of Psychiatry and Behavioral Science for the Stanford University School of Medicine.

Dr. Ohayon is widely published in scholarly journals on topics ranging from chronic insomnia in depression and anxiety disorders to the pathology of confusional arousals.

Recently, Dr. Ohayon served as lead author of a study released March 1, 2016 on the impacts of night-time light on sleep. He presented findings of the study at the April, 2016 meeting of the American Academy of Neurology. For the study, researchers completed phone interviews of a representative sample of 15,863 people across the USA from 2002-2009. To ascertain the amount of external light participants were exposed to, researchers used night-time light radiance data from the Department of Defense Meteorological Satellite Program’s Operation Linescan System. Among findings from the study: those living in more intensely-lit areas were 6% more likely to sleep fewer than six hours per night than people in less intensely-lit areas. People in more intensely-lit areas were also more likely to report fatigue, to sleep less per night, to experience excessive daytime sleepiness and to awaken confused during the night.

Dr. Ohayon completed his medical and psychiatry studies at Aix-Marseille II University, with his residency in psychiatry at Psychiatre des Hopitaux, Assistance Publique de Marseille. He completed a doctor of science degree in mathematics and computer sciences at Aix-Marseille III University and a doctor of philosophy degree in biology at Claude-Bernard University. He is the John-Arrillaga Principal Investigator of Sleep and Psychiatry Epidemiology, Arrillaga Foundation.


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