medRxiv
February 17, 2026
Constantin Weberpals, A. Specht, Natasja Bonde Andersen et al.
preprint
Abstract Type 1 narcolepsy (NT1), a disorder caused by the loss of hypocretin/orexin transmission, is characterized by daytime sleepiness and symptoms where Rapid Eye Movement (REM) sleep, a state normally occurring from middle to late in the night, can intermingle with wakefulness. This results in cataplexy and sleep paralysis, episodes of muscle paralysis when awake, or in the generation of...
European Journal of Psychotraumatology
January 7, 2025
Cresta Asah, Hinuga Sandahl, Lone Baandrup et al.
2 citations
Background: Sleep disturbances are widely reported in Post-Traumatic Stress Disorder (PTSD). Although Dream Enactment Behaviour (DEB) has long been associated with PTSD, its high prevalence has only recently been recognized, sparking discussions about the classification of trauma-related sleep disorders. The impact of DEB on treatment outcomes in PTSD remains unexplored.Objective: To...
BMC Psychiatry
August 14, 2021
J. Rasmussen, Poul Jennum, K. Linnet et al.
Background Cannabis use is an important risk factor for development of psychosis and further transition to schizophrenia. The prevalence of patients with psychosis and comorbid cannabis use (dual diagnosis) is rising with no approved specialized pharmacological treatment option. Cannabidiol, a constituent of the Cannabis sativa plant, has potential both as an antipsychotic and as a cannabis...
Journal of Sleep Research
December 1, 2019
Julie A E Christensen, Sébrina Aubin, Tore Nielsen et al.
There is ongoing controversy regarding the role of rapid eye movements (EMs) during rapid eye movement (REM) sleep. One prevailing hypothesis is that EMs during REM sleep are indicative of the presence of visual imagery in dreams. We tested the validity of this hypothesis by measuring EMs in blind subjects and correlating these with visual dream content. Eleven blind subjects, of whom five were...
Trials
November 6, 2017
Hinuga Sandahl, Poul Jennum, Lone Baandrup et al.
Sleep disturbances are often referred to as a hallmark and as core symptoms of post-traumatic stress disorder (PTSD). Untreated sleep disturbances can contribute to the maintenance and exacerbation of PTSD symptoms, which may diminish treatment response and constitute a risk factor for poor treatment outcome. Controlled trials on treatment of sleep disturbances in refugees suffering from PTSD...
Sleep Medicine
February 18, 2014
Amani Meaidi, Poul Jennum, Maurice Ptito et al.
Objectives: We aimed to assess dream content in groups of congenitally blind (CB), late blind (LB), and age- and sex-matched sighted control (SC) participants. Methods: We conducted an observational study of 11 CB, 14 LB, and 25 SC participants and collected dream reports over a 4-week period. Every morning participants filled in a questionnaire related to the sensory construction of the dream,...
Sleep Medicine
August 2013
Yves Dauvilliers, Poul Jennum, Giuseppe Plazzi
Narcolepsy is a rare disabling hypersomnia disorder that may include cataplexy, sleep paralysis, hypnagogic hallucinations, and sleep-onset rapid eye movement (REM) periods, but also disrupted nighttime sleep by nocturnal awakenings, and REM sleep behavior disorder (RBD). RBD is characterized by dream-enacting behavior and impaired motor inhibition during REM sleep (REM sleep without atonia,...