Evidence map›Paper›PMID 34735464›Full record

ArticlePloS one2021

Future-relevant memories are not selectively strengthened during sleep.

Jennifer E Ashton, Scott A Cairney

Abstract read
In one paragraph

Article in PloS one, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers.

0numbers the graph read from it
0cells of the map it votes in
15citing 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

15 citing papers in PubMed.

  1. Sleep loss disrupts the neural signature of successful learning.Cerebral cortex (New York, N.Y. : 1991) · 2023
    Trial
  2. Review
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  6. Two-factor synaptic consolidation reconciles robustness with pruning and homeostatic scaling.Proceedings of the National Academy of Sciences of the United States of America · 2025
    Article
  7. Article
  8. Memory control deficits in the sleep-deprived human brain.Proceedings of the National Academy of Sciences of the United States of America · 2025
    Article
  9. Article
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  14. Sleep preferentially consolidates negative aspects of human memory: Well-powered evidence from two large online experiments.Proceedings of the National Academy of Sciences of the United States of America · 2022
    Article
  15. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

2 authors.

Jennifer E AshtonDepartment of Psychology, University of York, York, United Kingdom.ORCID 0000-0002-6337-4814
Scott A CairneyDepartment of Psychology, University of York, York, United Kingdom.

Funding

Medical Research Council MR/P020208/1
6 · The paper itself

Abstract

Overnight consolidation processes are thought to operate in a selective manner, such that important (i.e. future-relevant) memories are strengthened ahead of irrelevant information. Using an online protocol, we sought to replicate the seminal finding that the memory benefits of sleep are enhanced when people expect a future test [Wilhelm et al., 2011]. Participants memorised verbal paired associates to a criterion of 60 percent (Experiment 1) or 40 percent correct (Experiment 2) before a 12-hour delay containing overnight sleep (sleep group) or daytime wakefulness (wake group). Critically, half of the participants were informed that they would be tested again the following day, whereas the other half were told that they would carry out a different set of tasks. We observed a robust memory benefit of overnight consolidation, with the sleep group outperforming the wake group in both experiments. However, knowledge of an upcoming test had no impact on sleep-associated consolidation in either experiment, suggesting that overnight memory processes were not enhanced for future-relevant information. These findings, together with other failed replication attempts, show that sleep does not provide selective support to memories that are deemed relevant for the future.

Indexed as

AdultAnalysis of VarianceEmotionsFemaleHabitsHumansLearningMaleMemoryMemory ConsolidationSleepSurveys and QuestionnairesWakefulnessYoung Adult

Identifiers

PMID34735464
PMCPMC8568116

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.