Tore Nielsen is a Professor of Psychiatry at the Université de Montréal and Director of the Dream & Nightmare Laboratory (DNL) within the Center for Advanced Research in Sleep Medicine. His current research concerns dreaming at sleep onset, the role of dreaming in learning and memory, pathophysiology and dream function in nightmare sufferers, targeted memory reactivation (TMR) effects on sleep and dreaming, and nightmares after early life adversity. His studies employ a variety of sleep research methods including polysomnography, selective REM sleep deprivation, spectral analysis of the EEG and ECG, virtual reality exposure, and internet-based dream collection.