Journal of Sleep Research
April 1, 2026
Severin Ableidinger, Luigi De Gennaro, Sérgio Mota-Rolim et al.
During lucid dreaming (LD), dreamers are aware that they are dreaming and may be able to influence the oneiric content. There has been recent debate about the relative importance of the ability to influence the dream and having agency over the pure awareness of dreaming. To underline this, we examined the associations of lucid dreams without agency (LD-Ag) and lucid dreams with agency (LD + Ag)...
Journal of Sleep Research
February 1, 2026
Courtney J Bolstad, Bjørn Bjorvatn, Ngan Yin Chan et al.
The present study aimed to describe the prevalence rates of frequent (i.e., at least weekly) dream recall and nightmares with consideration for differences in age, gender and sleep duration in 16 countries using equivalent assessment methods. The study sample included 15,854 participants (69.9% women) aged 18-99 years (M = 42.39, SD = 16.43) collected by the International COVID-19 Sleep Study...
Journal of Sleep Research
October 1, 2024
Courtney J Bolstad, Brigitte Holzinger, Serena Scarpelli et al.
The association between nightmare frequency (NMF) and suicidal ideation (SI) is well known, yet the impact of the COVID-19 pandemic on this relation is inconsistent. This study aimed to investigate changes in NMF, SI, and their association during the COVID-19 pandemic. Data were collected in 16 countries using a harmonised questionnaire. The sample included 9328 individuals (4848 women; age...
Somnologie - Schlafforschung und Schlafmedizin
August 15, 2023
Severin Ableidinger, Gerhard Klösch, Brigitte Holzinger
Abstract In dream research there exists a multitude of dream questionnaires and dream content analysis scales. However, many of them are either limited, not standardized or validated, or require a lot of effort. At the same time there are often divergent or even contradictory results in dream research, and comparability between different studies is often limited. Large sample sizes are rare but...
Journal of Clinical Medicine
May 12, 2023
Severin Ableidinger, Brigitte Holzinger
13 citations
Sleep paralysis and lucid dreams are two states of consciousness that are connected to REM sleep but are defined by higher awareness in contrast to regular REM sleep. Despite these similarities, the two states differ widely in their emotional tone and their perceived controllability. This review aims to summarize the current research containing sleep paralysis and lucid dreams. However, given...
Nature and Science of Sleep
August 1, 2022
Brigitte Holzinger, Franziska Nierwetberg, Frances Chung et al.
16 citations
Purpose: The COVID-19 pandemic affects mental health and sleep, resulting in frequent nightmares. Therefore, identifying factors associated with nightmare frequency is important, as it can indicate mental health issues. The study aimed to investigate increases in nightmare frequency comparing the pre-pandemic and pandemic period, and identify its risk factors. Further, the mediating role of...
PLoS One
2022
P Kelly, Tainá Macêdo, T Felipe et al.
3 citations
The COVID-19 pandemic changed people's lives all over the world. While anxiety and stress decreased sleep quality for most people, an increase in total sleep time was also observed in certain cohorts. Dream recall frequency also increased, especially for nightmares. However, to date, there are no consistent reports focusing on pandemic-related changes in lucid dreaming, a state during which...
Nature and Science of Sleep
2022
Serena Scarpelli, Michael R Nadorff, Bjørn Bjorvatn et al.
A growing number of studies have demonstrated that the coronavirus disease-19 (COVID-19) pandemic has severely affected sleep and dream activity in healthy people. To date, no investigation has examined dream activity specifically in COVID-19 patients. As part of the International COVID-19 Sleep Study (ICOSS), we compared 544 COVID-19 participants with 544 matched-controls. A within-subjects...
Somnologie : Schlafforschung und Schlafmedizin = Somnology : sleep research and sleep medicine
2022
Severin Ableidinger, Franziska Nierwetberg, Brigitte Holzinger
The pandemic caused by the coronavirus disease 2019 (COVID-19) had a huge impact on public mental health. This was also reflected in dreams. Not only did people start to remember more dreams, but dream content changed as themes like sickness, confinement, and-in the English-speaking world-even bugs began to dominate. This also led to an increase in nightmare frequency. There are various factors...
Frontiers in Psychology
2021
Brigitte Holzinger, Franziska Nierwetberg, Gerhard Klösch
2 citations
In this case report, we explain the story of a woman diagnosed with severe PTSD, suffering from recurrent nightmares involving a traumatizing event. She participated in 6 week lucid dreaming training to help her reduce her nightmare frequency. Our descriptions include her dream reports as well as the results of the psychological assessment conducted. In only 6 weeks, she was able to begin to...
Nature and Science of Sleep
2021
Eirin Fränkl, Serena Scarpelli, Michael R Nadorff et al.
Many have reported odd dreams during the pandemic. Given that dreams are associated with mental health, understanding these changes could provide crucial information about wellbeing during the pandemic. This study explored associations between COVID-19 and dream recall frequency (DRF), and related social, health, and mental health factors. We conducted a cross-sectional web survey of 19,355...
Frontiers in Psychology
2020
Brigitte Holzinger, Bernd Saletu, Gerhard Klösch
30 citations
About 80% of posttraumatic stress disorder (PTSD) patients suffer from nightmares or dysphoric dreams that cause major distress and impact nighttime or daytime functioning. Lucid dreaming (LD) is a learnable and effective strategy to cope with nightmares and has positive effects on other sleep variables. In LDs, the dreamer is aware of the dreaming state and able to control the dream content....
Frontiers in Psychology
2020
Brigitte Holzinger, Lucille Mayer
15 citations
Lucid dreaming refers to a dream state characterized by the dreamers' awareness of being in a dream and being able to volitionally control its content. The aim of this study was to describe and model neurophysiological evidence for the seven awareness criteria of lucid dreaming based on those proposed by Paul Tholey. Each of the awareness criteria was analyzed separately with regard to its...
Frontiers in Psychology
2020
Brigitte Holzinger, Lucille Mayer, Isabel Barros et al.
Validated instruments for the analysis of dream contents are still scarce. Therefore, the aim of this study was to validate the Dreamland Questionnaire (DL-Q) by comparing its results to those of the Hall and van de Castle Coding System (HVDC). Twenty-two participants voluntarily filled in a written dream report as well as our DL-Q questionnaire, in total 30 dreams were collected with both...
Journal of Sleep Research
January 29, 2019
Annika Gieselmann, Malik Ait Aoudia, Michelle Carr et al.
192 citations
This consensus paper provides an overview of the state of the art in research on the aetiology and treatment of nightmare disorder and outlines further perspectives on these issues. It presents a definition of nightmares and nightmare disorder followed by epidemiological findings, and then explains existing models of nightmare aetiology in traumatized and non-traumatized individuals. Chronic...
Journal of clinical sleep medicine : JCSM : official publication of the American Academy of Sleep Medicine
January 15, 2018
Franziska Di Pauli, Ambra Stefani, Evi Holzknecht et al.
Few studies have addressed dreaming in patients with sleep apnea. We hypothesized that respiratory events and subsequent oxygen desaturation act as an important physiological trigger and may thus influence dream content in patients with a sleep-related breathing disorder. Seventy-six patients (28 women, mean age 54 years, range 20-82) who underwent polysomnography because of suspected sleep...
Acta Neurologica Scandinavica
January 30, 2015
Brigitte Holzinger, Gerhard Klösch, Bernd Saletu
59 citations
OBJECTIVES: The aim of the present exploratory clinical study was to evaluate LD as an add-on therapy for treating nightmares. METHODS: Thirty-two subjects having nightmares (ICD-10: F51.5) at least twice a week participated. Subjects were randomly assigned to group: A) Gestalt therapy group (= GTG), or B) Gestalt and lucid dreaming group therapy (= LDG). Each group lasted ten weeks....
Contemporary Hypnosis
December 1, 2009
Brigitte Holzinger
AbstractAlthough the concept of ‘lucid dreaming’ was first coined by Frederik Willems van Eeden, a Dutch psychiatrist, and introduced at the meeting of The Society for Psychical Research held on 22 April 1913, the phenomenon of lucid dreaming was already known in earlier historical periods and its descriptions can be found in writings of Aristotle. However, modern lucid dreaming research was...
heiDOK (Heidelberg University)
2009
Evelyn Doll, Georg Gittler, Brigitte Holzinger
27 citations
The term "lucid dream" describes a dream during which the dreamer is aware of being in a dream while the dream is ongoing. Our investigation focused on the frequency of the lucid dream experience and its relationship to mental health, behavioural control (TPF; Becker, 1989), decision behaviour (EQS; Wolfram, 1982), and spatial abilities (3DW; Gittler, 1990). Data analysis of 89 subjects...
Dreaming
June 1, 2006
Brigitte Holzinger, Stephen LaBerge, Lynne Levitan
69 citations
The main goal of the present study was to explore electrophysiologicaldifferences between lucid and nonlucid dreams in REM sleep. Seven men andfour women experienced in lucid dreaming underwent polysomnographicrecordings in the sleep laboratory on two consecutive nights. EEG signalswere subjected to spectral analysis to obtain Þve different frequency bandsbetween 1 and 20 Hz. Lucidity was...