&lt;p&gt;Electrophysiological Correlates of Dream Recall During REM Sleep: Evidence from Multiple Awakenings and Within-Subjects Design&lt;/p&gt;

Scarpelli, Serena; Bartolacci, Chiara; D’Atri, Alessandro; Camaioni, Milena; Annarumma, Ludovica; Gorgoni, Maurizio; Cloos, Chiara; Ferrara, Michele; Gennaro, Luigi De

doi:10.2147/nss.s279786

Cited by 12 publications

(17 citation statements)

References 36 publications

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“…More directly, EEG investigations revealed the link between specific topographic patterns and dream experience [ 4 , 9 , 11 , 12 , 13 , 14 , 18 ]. Overall, the EEG findings point out that the local presence of slow waves in certain regions may interfere with the encoding and recall of dream experience.…”

Section: Overview Of Current Knowledgementioning

confidence: 99%

“…In parallel, the brain activation expressed in term of higher rapid frequencies (>25 Hz) predicted DR when localized in the parieto-occipital areas during NREM sleep and in frontal and temporal regions during REM sleep [ 13 ]. Similarly, higher beta power (16–24 Hz) is related to DR after REM sleep over the occipital area in a multiple awakenings protocol [ 12 ]. However, it should be mentioned that a recent investigation by Wong et al [ 68 ] using a serial awakening paradigm failed to find any difference between the recall and non-recall condition.…”

Section: Overview Of Current Knowledgementioning

confidence: 99%

“…For instance, Goodenough et al [ 120 ] found dream reports with higher total word count followed NREM sleep, in the process of transitioning to REM [ 120 ]. To date, just a few studies have investigated the influence of circadian and homeostatic aspects on dreaming [ 4 , 9 , 12 , 16 ] showing, overall, that they do not affect the EEG pattern related to the presence/absence of DR. However, none of these studies collected dream reports, so no information is available about the relation between the EEG variations, due to these processes, and the qualitative/quantitative features of DR.…”

Section: Manipulating Dream Experiencementioning

confidence: 99%

“…It can happen many times per night and is characterized by different degrees of emotional intensity, bizarreness, visual vividness, and narrative complexity. Although dreaming is impossible to study directly, many researchers investigated its neural bases in healthy subjects [ 2 , 3 , 4 , 5 , 6 , 7 , 8 , 9 , 10 , 11 , 12 , 13 , 14 ] or clinical samples [ 15 , 16 ] in different age ranges [ 10 , 17 , 18 ]. Most investigations focused on dream recall (DR), namely the individuals’ content reported immediately after awakenings.…”

Section: Introductionmentioning

confidence: 99%

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Investigation on Neurobiological Mechanisms of Dreaming in the New Decade

et al. 2021

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Dream research has advanced significantly over the last twenty years, thanks to the new applications of neuroimaging and electrophysiological techniques. Many findings pointed out that mental activity during sleep and wakefulness shared similar neural bases. On the other side, recent studies have highlighted that dream experience is promoted by significant brain activation, characterized by reduced low frequencies and increased rapid frequencies. Additionally, several studies confirmed that the posterior parietal area and prefrontal cortex are responsible for dream experience. Further, early results revealed that dreaming might be manipulated by sensory stimulations that would provoke the incorporation of specific cues into the dream scenario. Recently, transcranial stimulation techniques have been applied to modulate the level of consciousness during sleep, supporting previous findings and adding new information about neural correlates of dream recall. Overall, although multiple studies suggest that both the continuity and activation hypotheses provide a growing understanding of neural processes underlying dreaming, several issues are still unsolved. The impact of state-/trait-like variables, the influence of circadian and homeostatic factors, and the examination of parasomnia-like events to access dream contents are all opened issues deserving further deepening in future research.

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Section: Overview Of Current Knowledgementioning

confidence: 99%

Section: Overview Of Current Knowledgementioning

confidence: 99%

Section: Manipulating Dream Experiencementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Investigation on Neurobiological Mechanisms of Dreaming in the New Decade

et al. 2021

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“…The existence of different EEG activity patterns preceding the BEp could reflect eventual cognitive processes associated with these activations since some studies observed that a local increase of beta 86 , 87 and gamma 88 activity is associated with dream experience. Some authors recently proposed that the parasomniac episodes allow the unique opportunity to observe the mentation and eventual cognitive processes directly.…”

Section: Discussionmentioning

confidence: 99%

EEG Patterns Prior to Motor Activations of Parasomnias: A Systematic Review

Camaioni¹,

Scarpelli²,

Gorgoni³

et al. 2021

NSS

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Introduction Non-rapid eye movement (NREM) parasomnias are defined as abnormal nocturnal behaviors that typically arise from the NREM sleep stage 3 during the first sleep cycle. The polysomnographic studies showed an increase in sleep fragmentation and an atypical slow wave activity (SWA) in participants with NREM parasomnias compared to healthy controls. To date, the pathophysiology of NREM parasomnias is still poorly understood. The recent investigation of the EEG patterns immediately before parasomnia events could shed light on the motor activations’ processes. This systematic review aims to summarize empirical evidence about these studies and provide an overview of the methodological issues. Methods A systematic literature search was carried out in PubMed, Web of Science, and Scopus, following the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA). The documents obtained were evaluated using the Newcastle–Ottawa Scale (NOS). Results Nine studies were included in the qualitative synthesis. The major evidence revealed an increased slow frequency EEG activity immediately before the motor activations in frontal and central areas and increased beta activity in the anterior cingulate cortices. Discussion The investigation of EEG patterns before parasomniac episodes could provide new insight into the study of NREM parasomnia pathophysiology. The high- and low-frequency EEG increase before the episodes could represent a predictive electrophysiological pattern of the motor activations’ onset. Overall, identifying specific sleep markers before parasomnias might also help differentiate between NREM parasomnias and other motor sleep disorders. Different methodological protocols should be integrated for overcoming the lack of consistent empirical findings. Thus, future studies should focus on the topographical examination of canonical EEG frequency bands to better understand spatial and time dynamics before the episodes and identify the networks underlying the onset of activations.

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Neurobiology of dreams

Siclari

2023

Encyclopedia of Sleep and Circadian Rhythms

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<p>Electrophysiological Correlates of Dream Recall During REM Sleep: Evidence from Multiple Awakenings and Within-Subjects Design</p>

Cited by 12 publications

References 36 publications

Investigation on Neurobiological Mechanisms of Dreaming in the New Decade

Investigation on Neurobiological Mechanisms of Dreaming in the New Decade

EEG Patterns Prior to Motor Activations of Parasomnias: A Systematic Review

Neurobiology of dreams

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