Sleep
August 12, 2020
Carlo Cipolli, Fabio Pizza, Claudia Bellucci et al.
To assess the frequency of dream experience (DE) developed during naps at Multiple Sleep Latency Test (MSLT) by patients with narcolepsy type 1 (NT1) and establish, using story-grammar analysis, the structural organization of DEs developed during naps with sleep onset rapid eye movement (REM) period (SOREMP) sleep compared with their DEs during early- and late-night REM sleep. Thirty drug-free...
Journal of Sleep Research
August 9, 2020
P. Bugalho, F. Ladeira, Raquel Barbosa et al.
Cross‐sectional studies suggest a correlation between alterations in dream content reports and executive dysfunction tests in Parkinson’s disease (PD), but this has not been assessed in longitudinal studies. Our objective was to assess the predictive value of dream content for progression of cognitive dysfunction in PD. We prospectively addressed all consecutive, non‐demented patients with PD...
Somnologie: Schlafforschung und Schlafmedizin
August 3, 2020
Michael Schredl, Katharina Lüth, Judith Schmitt et al.
5 citations
Abstract Background and objective Nightmares are typically underdiagnosed and undertreated, even though frequent nightmares are quite common in patients with sleep-related breathing disorders. Based on a previous study, we investigated whether patients would respond if they were specifically asked whether they would be interested in telephone counselling about nightmares and nightmare...
Brain Sciences
August 1, 2020
Alessandro Cicolin, Michele Boffano, Guglielmo Beccuti et al.
Both non-rapid eye movements and rapid eye movements sleep facilitate the strengthening of newly encoded memory traces, and dream content reflects this process. Numerous studies evaluated the impact of diseases on dream content, with particular reference to cancer, and reported the presence of issues related to death, negative emotions, pain and illness. This study investigates death and...
Consciousness and Cognition
August 1, 2020
Cloé Blanchette-Carrière, Sarah-Hélène Julien, Claudia Picard-Deland et al.
20 citations
Neurophysiological correlates of self-awareness during sleep ('lucid dreaming') remain unclear despite their importance for clarifying the neural underpinnings of consciousness. Transcranial direct (tDC) and alternating (tAC) current stimulation during sleep have been shown to increase dream self-awareness, but these studies' methodological weaknesses prompted us to undertake additional study....
Consciousness and Cognition
August 1, 2020
Remington Mallett
14 citations
Lucid dreams often coincide with having control over dream events in real-time, although the limitations of dream control are not completely understood. The current study probed the ability of lucid dreamers to reinstate waking scene memories while dreaming. After brief exposure to an experimental scene, participants were asked to reinstate the scene while lucid dreaming (i.e., change dream...
Consciousness and Cognition
August 1, 2020
Claudia Picard-Deland, Maude Pastor, Elizaveta Solomonova et al.
25 citations
Despite a high prevalence and broad interest in flying dreams, these exceptional experiences remain infrequent. Our study aimed to (1) induce flying dreams using a custom-built virtual reality (VR) flying task, (2) examine their phenomenological correlates and (3) investigate their relations to participant state and trait factors. 137 participants underwent VR-flying followed by a morning nap....
Frontiers in Psychology
July 3, 2020
Jiaxi Wang, JingYu He, Ting Bin et al.
In this study, participants recorded their waking events (Personal significant events, PSEs/Major concerns, MCs) and dream reports for 7 days. These events and dreams were paired by the same day (216 PSEs-dreams pairs and 215 MCs-dreams pairs). Then participants were instructed to both find similar features (characters, objects, locations, actions, emotions, and themes) of their events-dreams...
Sleep
July 2, 2020
Xianchen Liu, Yanyun Yang, Zhenzhen Liu et al.
41 citations
STUDY OBJECTIVES: Nightmares are a significant risk factor of suicidal behavior. This study examined the longitudinal associations of nightmare frequency and distress with suicidal thought (ST), suicide plan (SP), and suicide attempt (SA) and mediating role of depressive symptoms in adolescents. METHODS: A total of 6,923 adolescents who participated in the 1-year follow-up of Shandong...
2020 11th Conference of the European Study Group on Cardiovascular Oscillations
July 1, 2020
Mimma Nardelli, Ugo Faraguna, Giulia Grandi et al.
This study reports on a multivariate complexity assessment for cardiovascular dynamics during REM sleep leading to a dream recall. Heart rate variability, as well as systolic and diastolic time interval variability series were gathered from eight volunteers during night sleep, and were considered input of a trivariate Multichannel Complexity Index (MCI) analysis. MCI is a recently proposed...
Der Nervenarzt
July 2020
Lukas Frase, Simone B Duss, Annika Gieselmann et al.
Cognitive behavioral therapeutic interventions are considered to be one of the most effective forms of treatment of various mental disorders. Besides being very frequent, sleep disorders, such as insomnia and nightmare disorder are often not treated effectively and guideline-conform, mainly due to the lack of qualified psychotherapists. Implementation of modern technical options, such as...
Schizophrenia Research
July 1, 2020
Timo Hennig, Björn Schlier, Tania M Lincoln
Experimental research has shown that poor sleep triggers psychotic experiences, even in healthy participants. This warrants an in-depth investigation of this mechanism in a naturalistic environment, an exploration of which particular aspects of poor sleep trigger psychotic symptoms, and a test for reverse effects of symptoms on sleep. For this purpose, we conducted a 14-day ambulatory...
Imagination, Cognition and Personality
June 17, 2020
Michael Schredl
A variety of factors contribute to nightmare distress; in addition to nightmare frequency also beliefs about nightmares can be associated with heightened nightmare distress. The study investigated the personality correlates of beliefs about nightmares and whether these beliefs mediate the relationship between gender, neuroticism, and nightmare distress. Overall, 1214 persons (716 women, 498...
Journal of Sleep Research
June 11, 2020
Michael Schredl, Anja S. Göritz
10 citations
Models of nightmare aetiology postulate an interaction between trait and state factors. However, most of the studies that support these models have been cross-sectional and longitudinal studies are scarce. The present data were obtained from N = 888 participants completing two online dream studies carried out independently with the same online panel 2 years apart. Nightmare frequency declined...
Journal of Traumatic Stress
June 10, 2020
Westley Youngren, N. Hamilton, Kristopher J. Preacher
Posttrauma nightmares are recurring nightmares that begin after a traumatic experience and can occur as often as multiple times per week, often in a seemingly random pattern. Although these nightmares are prevalent in trauma survivors, little is known about the mechanisms underlying their sporadic occurrence. The present study aimed to investigate predictors of posttrauma nightmares. The sample...
Zenodo (CERN European Organization for Nuclear Research)
June 10, 2020
T. Divya S. Kusuma
preprint
Nightmares also categorized as fighting dreams suddenly awake the sleeper from Rapid Eye Movement (REM) sleep. Nightmares can be caused by improper food intake, alcohol withdrawal, digestive or nervous disorders and drug induced (mainly due to the drugs which affect the neurotransmitters). Some of the drugs that can induce nightmares are Beta blockers, Statins, Anti depressants, Anti...
Brain Sciences
June 3, 2020
Serena Scarpelli, Aurora D'Atri, Chiara Bartolacci et al.
Several findings support the activation hypothesis, positing that cortical arousal promotes dream recall (DR). However, most studies have been carried out on young participants, while the electrophysiological (EEG) correlates of DR in older people are still mostly unknown. We aimed to test the activation hypothesis on 20 elders, focusing on the Non-Rapid Eye Movement (NREM) sleep stage. All the...
Schizophrenia
June 1, 2020
Umair Akram, Maria Gardani, Kamila R. Irvine et al.
31 citations
Abstract Sleep disruption is commonly associated with psychotic experiences. While sparse, the literature to date highlights nightmares and related distress as prominent risk factors for psychosis in students. We aimed to further explore the relationship between specific nightmare symptoms and psychotic experiences in university students while examining the mediating role of emotion...
University Library Heidelberg
May 30, 2020
Michael Schredl, Maria Gilles, Isabell Wolf et al.
2 citations
Dream recall frequencies exhibit large inter-individual differences, ranging from recalling a dream almost every morning to recalling a dream almost never. Although dream recall has been conceptualized as a stable trait, longitudinal studies in this area are scarce. Within the framework of a complex study, 279 women (mean age: 31.76 ± 4.73 yrs.) completed a brief sleep questionnaire three times...
May 27, 2020
A. Bullock, A. Burns, Anna Alkozei et al.
Disturbing dreams and nightmares are common in individuals with post-traumatic stress disorder (PTSD). At present, little research has investigated the associations between nightmares and cognition in these individuals. However, a robust body of research has shown memory and attention impairments among those with PTSD. The present study sought to investigate the potential relationships between...