keyword
https://read.qxmd.com/read/33308070/virtual-reality-training-of-lucid-dreaming
#21
JOURNAL ARTICLE
Jarrod Gott, Leonore Bovy, Emma Peters, Sofia Tzioridou, Stefano Meo, Çağatay Demirel, Mahdad Jafarzadeh Esfahani, Pedro Reis Oliveira, Thomas Houweling, Alessandro Orticoni, Anke Rademaker, Diede Booltink, Rathiga Varatheeswaran, Carmen van Hooijdonk, Mahmoud Chaabou, Anastasia Mangiaruga, Erik van den Berge, Frederik D Weber, Simone Ritter, Martin Dresler
Metacognitive reflections on one's current state of mind are largely absent during dreaming. Lucid dreaming as the exception to this rule is a rare phenomenon; however, its occurrence can be facilitated through cognitive training. A central idea of respective training strategies is to regularly question one's phenomenal experience: is the currently experienced world real , or just a dream? Here, we tested if such lucid dreaming training can be enhanced with dream-like virtual reality (VR): over the course of four weeks, volunteers underwent lucid dreaming training in VR scenarios comprising dream-like elements, classical lucid dreaming training or no training...
February 2021: Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences
https://read.qxmd.com/read/33283752/are-sleep-paralysis-and-false-awakenings-different-from-rem-sleep-and-from-lucid-rem-sleep-a-spectral-eeg-analysis
#22
JOURNAL ARTICLE
Greta Mainieri, Jean-Baptiste Maranci, Pierre Champetier, Smaranda Leu-Semenescu, Ana Gales, Pauline Dodet, Isabelle Arnulf
STUDY OBJECTIVES: To determine the polysomnography characteristics during sleep paralysis, false awakenings, and lucid dreaming (which are states intermediate to rapid eye movement [REM] sleep and wake but exceptionally observed in sleep laboratory). METHODS: In 5 participants, we captured 5 episodes of sleep paralysis (2 time marked with the ocular left-right-left-right code normally used to signal lucid dreaming, 1 time marked by an external noise, and 2 retrospectively reported) and 2 episodes of false awakening...
April 1, 2021: Journal of Clinical Sleep Medicine: JCSM: Official Publication of the American Academy of Sleep Medicine
https://read.qxmd.com/read/33089191/lucid-dreaming-and-the-feeling-of-being-refreshed-in-the-morning-a-diary-study
#23
JOURNAL ARTICLE
Michael Schredl, Sophie Dyck, Anja Kühnel
REM periods with lucid dreaming show increased brain activation, especially in the prefrontal cortex, compared to REM periods without lucid dreaming and, thus, the question of whether lucid dreaming interferes with the recovery function of sleep arises. Cross-sectional studies found a negative relationship between sleep quality and lucid dreaming frequency, but this relationship was explained by nightmare frequency. The present study included 149 participants keeping a dream diary for five weeks though the course of a lucid dream induction study...
March 2020: Clocks & Sleep
https://read.qxmd.com/read/32795836/is-there-a-relation-among-rem-sleep-dissociated-phenomena-like-lucid-dreaming-sleep-paralysis-out-of-body-experiences-and-false-awakening
#24
JOURNAL ARTICLE
Michael Raduga, Oleg Kuyava, Natalia Sevcenko
During REM sleep we normally experience dreams. However, there are other less common REM sleep phenomena, like lucid dreaming (LD), false awakening (FA), sleep paralysis (SP), and out of body experiences (OBE). LD occurs when one is conscious during dreaming, and FA occurs when one is dreaming but believes that has woken up. SP is characterized by skeletal muscle atonia and occurs mainly during awakening or falling asleep. OBE is the subjective sensation of 'leaving the physical body'. Since all these phenomena happen during REM sleep, their frequency is probably connected...
November 2020: Medical Hypotheses
https://read.qxmd.com/read/32768920/sleep-fragmentation-and-lucid-dreaming
#25
MULTICENTER STUDY
Jarrod Gott, Michael Rak, Leonore Bovy, Emma Peters, Carmen F M van Hooijdonk, Anastasia Mangiaruga, Rathiga Varatheeswaran, Mahmoud Chaabou, Luke Gorman, Steven Wilson, Frederik Weber, Lucia Talamini, Axel Steiger, Martin Dresler
Lucid dreaming-the phenomenon of experiencing waking levels of self-reflection within one's dreams-is associated with more wake-like levels of neural activation in prefrontal brain regions. In addition, alternating periods of wakefulness and sleep might increase the likelihood of experiencing a lucid dream. Here we investigate the association between sleep fragmentation and lucid dreaming, with a multi-centre study encompassing four different investigations into subjective and objective measures of sleep fragmentation, nocturnal awakenings, sleep quality and polyphasic sleep schedules...
September 2020: Consciousness and Cognition
https://read.qxmd.com/read/32670163/wake-up-work-on-dreams-back-to-bed-and-lucid-dream-a-sleep-laboratory-study
#26
JOURNAL ARTICLE
Daniel Erlacher, Tadas Stumbrys
Lucid dreaming offers many opportunities to study consciousness processes. However, laboratory research in this area is limited because frequent lucid dreamers are rare. Several studies demonstrated that different methods of induction could increase the number of lucid dreams. In four field studies, a combination of a wake-up-back-to-bed (WBTB) sleep protocol and a mnemonic technique (MILD) showed promising results. To further investigate the effectiveness of this combined approach, we conducted a sleep laboratory experiment with four different conditions...
2020: Frontiers in Psychology
https://read.qxmd.com/read/32526491/inducing-signal-verified-lucid-dreams-in-40-of-untrained-novice-lucid-dreamers-within-two-nights-in-a-sleep-laboratory-setting
#27
JOURNAL ARTICLE
K Appel, S Füllhase, S Kern, A Kleinschmidt, A Laukemper, K Lüth, L Steinmetz, L Vogelsang
Dreams in which the dreamer is aware of the dream state (lucid dreams, LD) are difficult to induce in naïve subjects in-laboratory. Recently, Stumbrys and Erlacher (2014) used a combination of existing induction techniques together with a self-developed experiment protocol and achieved comparatively high LD induction rates. In this study, we simplified their methodology slightly and repeated their experiment with twenty naïve subjects who spent one or two nights in our sleep laboratory. After about six hours of sleep, they were woken up during REM sleep and engaged in a series of cognitive tasks before going back to bed...
August 2020: Consciousness and Cognition
https://read.qxmd.com/read/32256437/lucid-dreaming-nightmares-and-sleep-paralysis-associations-with-reality-testing-deficits-and-paranormal-experience-belief
#28
JOURNAL ARTICLE
Kenneth G Drinkwater, Andrew Denovan, Neil Dagnall
Focusing on lucid dreaming, this paper examined relationships between dissociated experiences related to rapid eye movement (REM) sleep (lucid dreaming, nightmares, and sleep paralysis), reality testing, and paranormal experiences/beliefs. The study comprised a UK-based online sample of 455 respondents (110 males, 345 females, Mean age = 34.46 years, SD = 15.70), who had all previously experienced lucid dreaming. Respondents completed established self-report measures assessing control within lucid dreaming, experience and frequency of nightmares, incidence of sleep paralysis, proneness to reality testing deficits (Inventory of Personality Organization subscale, IPO-RT), subjective experience of receptive psi and life after death (paranormal experience), and paranormal belief...
2020: Frontiers in Psychology
https://read.qxmd.com/read/31849749/my-dream-my-rules-can-lucid-dreaming-treat-nightmares
#29
REVIEW
Tainá Carla Freitas de Macêdo, Glescikelly Herminia Ferreira, Katie Moraes de Almondes, Roumen Kirov, Sérgio Arthuro Mota-Rolim
Nightmares are defined as repeated occurrences of extremely dysphoric and well-remembered dreams that usually involve subjective threats to survival, security, or physical integrity. Generally, they occur during rapid eye movement sleep (REMS) and lead to awakenings with distress and insufficient overnight sleep. Nightmares may occur spontaneously (idiopathic) or as recurrent nightmares. Recurrent nightmares cause significant distress and impairment in occupational and social functioning, as have been commonly observed in post-traumatic stress disorder, depression and anxiety...
2019: Frontiers in Psychology
https://read.qxmd.com/read/31143939/increased-creative-thinking-in-narcolepsy
#30
JOURNAL ARTICLE
Célia Lacaux, Charlotte Izabelle, Giulio Santantonio, Laure De Villèle, Johanna Frain, Todd Lubart, Fabio Pizza, Giuseppe Plazzi, Isabelle Arnulf, Delphine Oudiette
Some studies suggest a link between creativity and rapid eye movement sleep. Narcolepsy is characterized by falling asleep directly into rapid eye movement sleep, states of dissociated wakefulness and rapid eye movement sleep (cataplexy, hypnagogic hallucinations, sleep paralysis, rapid eye movement sleep behaviour disorder and lucid dreaming) and a high dream recall frequency. Lucid dreaming (the awareness of dreaming while dreaming) has been correlated with creativity. Given their life-long privileged access to rapid eye movement sleep and dreams, we hypothesized that subjects with narcolepsy may have developed high creative abilities...
July 1, 2019: Brain
https://read.qxmd.com/read/30930809/the-functional-role-of-dreaming-in-emotional-processes
#31
REVIEW
Serena Scarpelli, Chiara Bartolacci, Aurora D'Atri, Maurizio Gorgoni, Luigi De Gennaro
Dream experience (DE) represents a fascinating condition linked to emotional processes and the human inner world. Although the overlap between REM sleep and dreaming has been overcome, several studies point out that emotional and perceptually vivid contents are more frequent when reported upon awakenings from this sleep stage. Actually, it is well-known that REM sleep plays a pivotal role in the processing of salient and emotional waking-life experiences, strongly contributing to the emotional memory consolidation...
2019: Frontiers in Psychology
https://read.qxmd.com/read/30464663/relationships-between-sleep-paralysis-and-sleep-quality-current-insights
#32
REVIEW
Dan Denis
Sleep paralysis is the unusual experience of waking up in the night without the ability to move. Currently little is known about the experience, despite the fact that the vast majority of episodes are associated with extreme fear and in a minority of cases can lead to clinically significant levels of distress. The aim of this work was to review the existing literature pertaining to the relationship sleep paralysis has to sleep more generally, measured both with subjective questionnaires and objective laboratory recordings...
2018: Nature and Science of Sleep
https://read.qxmd.com/read/30120229/smooth-tracking-of-visual-targets-distinguishes-lucid-rem-sleep-dreaming-and-waking-perception-from-imagination
#33
JOURNAL ARTICLE
Stephen LaBerge, Benjamin Baird, Philip G Zimbardo
Humans are typically unable to engage in sustained smooth pursuit for imagined objects. However, it is unknown to what extent smooth tracking occurs for visual imagery during REM sleep dreaming. Here we examine smooth pursuit eye movements during tracking of a slow-moving visual target during lucid dreams in REM sleep. Highly similar smooth pursuit tracking was observed during both waking perception and lucid REM sleep dreaming, in contrast to the characteristically saccadic tracking observed during visuomotor imagination...
August 17, 2018: Nature Communications
https://read.qxmd.com/read/30089135/pre-sleep-treatment-with-galantamine-stimulates-lucid-dreaming-a-double-blind-placebo-controlled-crossover-study
#34
RANDOMIZED CONTROLLED TRIAL
Stephen LaBerge, Kristen LaMarca, Benjamin Baird
Lucid dreaming is a remarkable state of consciousness in which one is aware of the fact that one is dreaming while continuing to dream. Based on the strong relationship between physiological activation during rapid eye-movement sleep and lucid dreaming, our pilot research investigated whether enhancing cortical activation via acetylcholinesterease inhibition (AChEI) would increase the frequency of lucid dreams and found AChEI to be a promising method for lucid dream induction. In the current study we sought to quantify the size and reliability of the effect of AChEI on lucid dreaming, dream recall and dream content as well as to test the effectiveness of an integrated lucid dream induction protocol which combined cholinergic stimulation with other methods for lucid dream induction...
2018: PloS One
https://read.qxmd.com/read/29422603/rem-sleep-respiratory-behaviours-mental-content-in-narcoleptic-lucid-dreamers
#35
JOURNAL ARTICLE
Delphine Oudiette, Pauline Dodet, Nahema Ledard, Emilie Artru, Inès Rachidi, Thomas Similowski, Isabelle Arnulf
Breathing is irregular during rapid eye-movement (REM) sleep, whereas it is stable during non-REM sleep. Why this is so remains a mystery. We propose that irregular breathing has a cortical origin and reflects the mental content of dreams, which often accompany REM sleep. We tested 21 patients with narcolepsy who had the exceptional ability to lucid dream in REM sleep, a condition in which one is conscious of dreaming during the dream and can signal lucidity with an ocular code. Sleep and respiration were monitored during multiple naps...
February 8, 2018: Scientific Reports
https://read.qxmd.com/read/28585737/a-new-measure-of-hallucinatory-states-and-a-discussion-of-rem-sleep-dreaming-as-a-virtual-laboratory-for-the-rehearsal-of-embodied-cognition
#36
JOURNAL ARTICLE
Clemens Speth, Jana Speth
Hallucinatory states are experienced not only in connection with drugs and psychopathologies but occur naturally and spontaneously across the human circadian cycle: Our nightly dreams bring multimodal experiences in the absence of adequate external stimuli. The current study proposes a new, tighter measure of these hallucinatory states: Sleep onset, REM sleep, and non-REM sleep are shown to differ with regard to (a) motor imagery indicating interactions with a rich imaginative world, and (b) cognitive agency that could enable sleepers to recognize their hallucinatory state...
January 2018: Cognitive Science
https://read.qxmd.com/read/27569701/beyond-the-neuropsychology-of-dreaming-insights-into-the-neural-basis-of-dreaming-with-new-techniques-of-sleep-recording-and-analysis
#37
REVIEW
Carlo Cipolli, Michele Ferrara, Luigi De Gennaro, Giuseppe Plazzi
Recent advances in electrophysiological [e.g., surface high-density electroencephalographic (hd-EEG) and intracranial recordings], video-polysomnography (video-PSG), transcranial stimulation and neuroimaging techniques allow more in-depth and more accurate investigation of the neural correlates of dreaming in healthy individuals and in patients with brain-damage, neurodegenerative diseases, sleep disorders or parasomnias. Convergent evidence provided by studies using these techniques in healthy subjects has led to a reformulation of several unresolved issues of dream generation and recall [such as the inter- and intra-individual differences in dream recall and the predictivity of specific EEG rhythms, such as theta in rapid eye movement (REM) sleep, for dream recall] within more comprehensive models of human consciousness and its variations across sleep/wake states than the traditional models, which were largely based on the neurophysiology of REM sleep in animals...
October 2017: Sleep Medicine Reviews
https://read.qxmd.com/read/27460633/terror-and-bliss-commonalities-and-distinctions-between-sleep-paralysis-lucid-dreaming-and-their-associations-with-waking-life-experiences
#38
JOURNAL ARTICLE
Dan Denis, Giulia L Poerio
Sleep paralysis and lucid dreaming are both dissociated experiences related to rapid eye movement (REM) sleep. Anecdotal evidence suggests that episodes of sleep paralysis and lucid dreaming are related but different experiences. In this study we test this claim systematically for the first time in an online survey with 1928 participants (age range: 18-82 years; 53% female). Confirming anecdotal evidence, sleep paralysis and lucid dreaming frequency were related positively and this association was most apparent between lucid dreaming and sleep paralysis episodes featuring vestibular-motor hallucinations...
February 2017: Journal of Sleep Research
https://read.qxmd.com/read/25348131/lucid-dreaming-in-narcolepsy
#39
JOURNAL ARTICLE
Pauline Dodet, Mario Chavez, Smaranda Leu-Semenescu, Jean-Louis Golmard, Isabelle Arnulf
OBJECTIVE: To evaluate the frequency, determinants and sleep characteristics of lucid dreaming in narcolepsy. SETTINGS: University hospital sleep disorder unit. DESIGN: Case-control study. PARTICIPANTS: Consecutive patients with narcolepsy and healthy controls. METHODS: Participants were interviewed regarding the frequency and determinants of lucid dreaming. Twelve narcolepsy patients and 5 controls who self-identified as frequent lucid dreamers underwent nighttime and daytime sleep monitoring after being given instructions regarding how to give an eye signal when lucid...
March 1, 2015: Sleep
https://read.qxmd.com/read/25278861/tickle-me-i-think-i-might-be-dreaming-sensory-attenuation-self-other-distinction-and-predictive-processing-in-lucid-dreams
#40
JOURNAL ARTICLE
Jennifer M Windt, Dominic L Harkness, Bigna Lenggenhager
The contrast between self- and other-produced tickles, as a special case of sensory attenuation for self-produced actions, has long been a target of empirical research. While in standard wake states it is nearly impossible to tickle oneself, there are interesting exceptions. Notably, participants awakened from REM (rapid eye movement-) sleep dreams are able to tickle themselves. So far, however, the question of whether it is possible to tickle oneself and be tickled by another in the dream state has not been investigated empirically or addressed from a theoretical perspective...
2014: Frontiers in Human Neuroscience
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