Evidence map›Paper›PMID 30562589›Full record

ArticleNeurobiology of learning and memory2019

Coupling of autonomic and central events during sleep benefits declarative memory consolidation.

Mohsen Naji, Giri P Krishnan, Elizabeth A McDevitt, Maxim Bazhenov, Sara C Mednick

Abstract read
In one paragraph

Article in Neurobiology of learning and memory, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 25 papers.

0numbers the graph read from it
0cells of the map it votes in
25citing 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

25 citing papers in PubMed.

  1. Trial
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  9. Review
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  11. Article
  12. Sleep neuroimaging: Review and future directions.Journal of sleep research · 2025
    Review
  13. Article
  14. REM refines and rescues memory representations: a new theory.Sleep advances : a journal of the Sleep Research Society · 2025
    Review
  15. Article
  16. Understanding the roles of central and autonomic activity during sleep in the improvement of working memory and episodic memory.Proceedings of the National Academy of Sciences of the United States of America · 2022
    Article
  17. Cardiac sympathetic-vagal activity initiates a functional brain-body response to emotional arousal.Proceedings of the National Academy of Sciences of the United States of America · 2022
    Article
  18. Article
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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

5 authors.

Mohsen NajiDepartment of Medicine, University of California San Diego, La Jolla, CA, USA.
Giri P KrishnanDepartment of Medicine, University of California San Diego, La Jolla, CA, USA.
Elizabeth A McDevittPrinceton Neuroscience Institute, Princeton University, Princeton, NJ, USA.
Maxim BazhenovDepartment of Medicine, University of California San Diego, La Jolla, CA, USA.
Sara C MednickDepartment of Cognitive Sciences, University of California Irvine, Irvine, CA, USA. Electronic address: mednicks@uci.edu.

Funding

The Pharmacological Enhancement of Sleep for Memory ImprovementR01AG046646 · NIA · UNIVERSITY OF CALIFORNIA RIVERSIDE · PI MEDNICK, SARA CAROLE · 2014 to 2018
$1.5M
NIA NIH HHS R01 AG046646
6 · The paper itself

Abstract

While anatomical pathways between forebrain cognitive and brainstem autonomic nervous centers are well-defined, autonomic-central interactions during sleep and their contribution to waking performance are not understood. Here, we analyzed simultaneous central activity via electroencephalography (EEG) and autonomic heart beat-to-beat intervals (RR intervals) from electrocardiography (ECG) during wake and daytime sleep. We identified bursts of ECG activity that lasted 4-5 s and predominated in non-rapid-eye-movement sleep (NREM). Using event-based analysis of NREM sleep, we found an increase in delta (0.5-4 Hz) and sigma (12-15 Hz) power and an elevated density of slow oscillations (0.5-1 Hz) about 5 s prior to peak of the heart rate burst, as well as a surge in vagal activity, assessed by high-frequency (HF) component of RR intervals. Using regression framework, we show that these Autonomic/Central Events (ACE) positively predicted post-nap improvement in a declarative memory task after controlling for the effects of spindles and slow oscillations from sleep periods without ACE. No such relation was found between memory performance and a control nap. Additionally, NREM ACE negatively correlated with REM sleep and learning in a non-declarative memory task. These results provide the first evidence that coordinated autonomic and central events play a significant role in declarative memory consolidation.

Indexed as

AdolescentAdultAutonomic Nervous SystemBrainElectrocardiographyElectroencephalographyFemaleHeart RateHumansMaleMemory ConsolidationPolysomnographySleep StagesYoung Adult

Identifiers

PMID30562589
PMCPMC6425961

What OpenQuestion holds

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Registered trials

None linked

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.