Evidence map›Paper›PMID 21340034›Full record

Trial reportPloS one2011

Transcranial electrical currents to probe EEG brain rhythms and memory consolidation during sleep in humans.

Lisa Marshall, Roumen Kirov, Julian Brade, Matthias Mölle, Jan Born

Abstract readRandomized Controlled Trial
In one paragraph

Trial report in PloS one, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 83 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
83citing papers in PubMed, 3 pooled it
–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

83 citing papers in PubMed, 3 syntheses or guidelines pooled it.

  1. Pooled it
  2. Pooled it
  3. Pooled it
  4. Trial
  5. The effects of eszopiclone on sleep spindles and memory consolidation in schizophrenia: a randomized clinical trial.Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology · 2020
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  9. The critical role of sleep spindles in hippocampal-dependent memory: a pharmacology study.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2013
    Trial
  10. Article
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  12. Review
  13. Article
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  18. Review
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23 more citing papers are in PubMed but not listed here.

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.

Lisa MarshallDepartment of Neuroendocrinology, University of Lübeck, Lübeck, Germany. marshall@kfg.uni-luebeck.de
Roumen Kirov
Julian Brade
Matthias Mölle
Jan Born

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Previously the application of a weak electric anodal current oscillating with a frequency of the sleep slow oscillation (∼0.75 Hz) during non-rapid eye movement sleep (NonREM) sleep boosted endogenous slow oscillation activity and enhanced sleep-associated memory consolidation. The slow oscillations occurring during NonREM sleep and theta oscillations present during REM sleep have been considered of critical relevance for memory formation. Here transcranial direct current stimulation (tDCS) oscillating at 5 Hz, i.e., within the theta frequency range (theta-tDCS) is applied during NonREM and REM sleep. Theta-tDCS during NonREM sleep produced a global decrease in slow oscillatory activity conjoint with a local reduction of frontal slow EEG spindle power (8-12 Hz) and a decrement in consolidation of declarative memory, underlining the relevance of these cortical oscillations for sleep-dependent memory consolidation. In contrast, during REM sleep theta-tDCS appears to increase global gamma (25-45 Hz) activity, indicating a clear brain state-dependency of theta-tDCS. More generally, results demonstrate the suitability of oscillating-tDCS as a tool to analyze functions of endogenous EEG rhythms and underlying endogenous electric fields as well as the interactions between EEG rhythms of different frequencies.

Indexed as

AdolescentAdultBiological ClocksBrainDeep Brain StimulationElectric StimulationElectroencephalographyFemaleHumansMaleMemoryNeuropsychological TestsSleepTask Performance and AnalysisYoung Adult

Identifiers

PMID21340034
PMCPMC3038929

What OpenQuestion holds

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LicenceCC BY
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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.