Evidence map›Paper›PMID 33239931›Full record

ArticleNature and science of sleep2020

Electrophysiological Correlates of Dream Recall During REM Sleep: Evidence from Multiple Awakenings and Within-Subjects Design.

Serena Scarpelli, Chiara Bartolacci, Aurora D'Atri, Milena Camaioni, Ludovica Annarumma, Maurizio Gorgoni, Chiara Cloos, Michele Ferrara, Luigi De Gennaro

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In one paragraph

Article in Nature and science of sleep, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.

0numbers the graph read from it
0cells of the map it votes in
11citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

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3 · Its place in the literature

Who cites it

11 citing papers in PubMed.

  1. A dream EEG and mentation database.Nature communications · 2025
    Article
  2. The Mechanisms of Magnesium in Sleep Disorders.Nature and science of sleep · 2025
    Review
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4 · The record

Corrections and comments

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5 · Who and what money

Authors and funding

9 authors.

Serena ScarpelliDepartment of Psychology, Sapienza University of Rome, Rome 00185, Italy.ORCID 0000-0002-9260-7111
Chiara BartolacciDepartment of Psychology, Sapienza University of Rome, Rome 00185, Italy.
Aurora D'AtriDepartment of Psychology, Sapienza University of Rome, Rome 00185, Italy.ORCID 0000-0003-3650-0683
Milena CamaioniDepartment of Psychology, Sapienza University of Rome, Rome 00185, Italy.ORCID 0000-0001-6556-2539
Ludovica AnnarummaDepartment of Psychology, Sapienza University of Rome, Rome 00185, Italy.ORCID 0000-0002-2138-650X
Maurizio GorgoniDepartment of Psychology, Sapienza University of Rome, Rome 00185, Italy.
Chiara CloosDepartment of Psychology, Sapienza University of Rome, Rome 00185, Italy.
Michele FerraraDepartment of Biotechnological and Applied Clinical Sciences, University of L'Aquila, Coppito, L'Aquila 67100, Italy.ORCID 0000-0003-2304-7576
Luigi De GennaroDepartment of Psychology, Sapienza University of Rome, Rome 00185, Italy.ORCID 0000-0003-3613-6631

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeIn the current study, we aimed to investigate the EEG correlates of dream recall (DR) monitoring both the homeostatic and state-trait like factors. We assessed the influence of the time of night on the EEG correlates of DR from REM sleep. Specifically, we tested the continuity-hypothesis (on the theta EEG band) and the activation-hypothesis (on the delta and beta bands).

methodsTwenty-seven subjects underwent polysomnography with multiple provoked awakenings during REM sleep. Only the subjects showing combinations of dream recall (REC) and non-REC (NREC) conditions in both first (1st-2nd sleep cycle) and second (3rd-4th sleep cycle) part of the night were included in the analyses. The final sample was composed of 10 subjects (mean age 24±0.70). EEG power spectra of the 5-min of REM sleep preceding each awakening were computed by a fast Fourier transform. The following frequency bands were considered: delta (0.50-4.75 Hz), theta (5.00-7.75 Hz), and beta (16.00-24.75 Hz). We also calculated the delta/beta power ratio as an integrated EEG index of activation.

resultsThe 2×2 within-subjects ANOVA recall × time revealed: a) no significant effect for time and no interaction; b) significant differences over the occipital area in the beta band; c) significant differences over the parietal area for the activation index values. Overall, the results indicated that DR is associated with higher activation regardless of homeostatic pressure across the night of sleep.

conclusionIn line with recent findings, we have shown that DR is predicted by desynchronized EEG activity during REM sleep, providing clear evidence in favor of the activation-hypothesis. We have also confirmed that the EEG pattern of DR can be ascribed to state-like factors. Further studies should assess whether homeostatic modulation may interact with some dream features and the related EEG predictors.

Indexed as

activation hypothesisdream recallEEGmultiple awakeningsREM sleepsleep homeostasis

Identifiers

PMID33239931
PMCPMC7682606

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