Dear All, We would like to invite you to the first event from the ELTE Cognitive Seminar series for the new academic year: *Péter Simor*** *Frequent nightmares at the intersection of personality factors, emotional dysregulation, and sleep physiology*** Location: PPK, Institue of Psychology, Izabella u. 46, room P2. Date: 28.09.2017. (Thursday), 17.00 Summary: Nightmares are intense and highly unpleasant mental experiences that occur usually – but not exclusively – during late-night Rapid Eye Movement (REM) sleep and often provoke abrupt awakenings. Nightmares affect approximately four percent of the adult population on a weekly basis. The clinical relevance of nightmares should not be underestimated given their high incidence in psychiatric populations, co-morbidity with insomniac symptoms and their association with daytime affective as well as cognitive dysfunctions. Frequent nightmares are associated with personality factors, emotional dysregulation, and altered sleep physiology. In this talk, I will summarize our main findings regarding the neurophysiological aspects of nightmare disorder and present an integrative approach to analyze this somewhat neglected sleep disorder.