Evidence map›Paper›PMID 11247052›Full record

ArticleSleep2001

Memory sources associated with REM and NREM dream reports throughout the night: a new look at the data.

G W Baylor, C Cavallero

Abstract read
PubMed
In one paragraph

Article in Sleep, 2001. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers.

0numbers the graph read from it
0cells of the map it votes in
21citing 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

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

21 citing papers in PubMed.

  1. Experimentally inducing dreams of remote emotional memory.Sleep advances : a journal of the Sleep Research Society · 2025
    Article
  2. Observational
  3. Article
  4. Article
  5. The hypnagogic state: A brief update.Journal of sleep research · 2023
    Review
  6. Article
  7. Quercetin-3-Molecules (Basel, Switzerland) · 2021
    Article
  8. Dormio: A targeted dream incubation device.Consciousness and cognition · 2020
    Article
  9. Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. Article
  15. Article
  16. Article
  17. Dreaming and offline memory consolidation.Current neurology and neuroscience reports · 2014
    Review
  18. Dreaming and insight.Frontiers in psychology · 2013
    Article
  19. Article
  20. Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

2 authors.

G W BaylorDépartement de Psychologie, Université de Montréal, Québec, Canada.
C Cavallero

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The data from three previously published studies on the memory sources of dreams, representing nine different moments of awakening throughout the night, are re-examined. In the original studies, elicited reports were recorded and segmented online into thematic units. The segmented reports were played back to Ss who were asked to identify memory sources or to associate to each segment. Memory sources were classified as episodic, semantic, or abstract self-references. In the meta-analysis and re-analyses reported here, the mean percentages of episodic memory sources are plotted separately for NREM and REM awakenings throughout the night. Within stages, neither NREM nor REM mean percentages differ significantly from each other, whereas between stages the mean percentage of episodic memory sources is significantly greater for NREM than for REM. Even when the correlation between report length and sleep stage is controlled by computing memory source density, the stage effect throughout the night persists for episodic memory sources. The relatively flat episodic memory curves for both NREM and REM indicate a rather constant recruitment of episodic memory sources throughout the night. No stage effect was found for strictly semantic memory sources. When semantic memory was defined generically, however, to include all non-spatio-temporal, "unmarked," information of self as well as of world, significantly more generic semantic memory sources derived from REM than from NREM reports, though not when corrected for the length of dream reports.

Indexed as

BrainCircadian RhythmDreamsHumansMemorySemanticsSleep, REMSleep StagesWakefulness

Identifiers

PMID11247052

What OpenQuestion holds

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.