Mathias Basner, MD, PhD, MSc is Professor of Psychiatry at the University of Pennsylvania's Perelman School of Medicine, where he directs the Behavioral Regulation & Health Section and the Unit for Experimental Psychiatry, Division of Sleep and Chronobiology. He is a physician and research scientist and the first author of The Lancet's 2014 article, "Auditory and Non-Auditory Effects of Noise on Health." His primary research interests concern the effects of sleep loss on neurobehavioral and cognitive functions, the effects of traffic noise, including aviation noise, on sleep and health, and population studies on sleep time and waking activities. Mathias has been an advisor to the World Health Organization (WHO) and led the systematic evidence review on the effects of noise on sleep for WHO's 2018 Environmental Noise Guidelines for the European Region. He is a Past President of the International Commission of Biological Effects of Noise (ICBEN).