Evidence map›Paper›PMID 30914674›Full record

ArticleScientific reports2019

Connectivity differences between consciousness and unconsciousness in non-rapid eye movement sleep: a TMS-EEG study.

Minji Lee, Benjamin Baird, Olivia Gosseries, Jaakko O Nieminen, Melanie Boly, Bradley R Postle, Giulio Tononi, Seong-Whan Lee

Abstract read
In one paragraph

Article in Scientific reports, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 26 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
26citing papers in PubMed, 2 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

26 citing papers in PubMed, 2 syntheses or guidelines pooled it.

  1. Guideline
  2. Pooled it
  3. Article
  4. Article
  5. Influence of Large-Scale Brain State Dynamics on the Evoked Response to Brain Stimulation.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2024
    Article
  6. Article
  7. Article
  8. Article
  9. The Current of Consciousness: Neural Correlates and Clinical Aspects.Current neurology and neuroscience reports · 2023
    Review
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  11. Article
  12. Article
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  14. Review
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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

8 authors.

Minji LeeDepartment of Brain and Cognitive Engineering, Korea University, Seoul, Korea.
Benjamin BairdWisconsin Institute for Sleep and Consciousness, Department of Psychiatry, University of Wisconsin, Madison, USA.
Olivia GosseriesWisconsin Institute for Sleep and Consciousness, Department of Psychiatry, University of Wisconsin, Madison, USA.
Jaakko O NieminenWisconsin Institute for Sleep and Consciousness, Department of Psychiatry, University of Wisconsin, Madison, USA.ORCID 0000-0002-7826-3519
Melanie BolyWisconsin Institute for Sleep and Consciousness, Department of Psychiatry, University of Wisconsin, Madison, USA.
Bradley R PostleWisconsin Institute for Sleep and Consciousness, Department of Psychiatry, University of Wisconsin, Madison, USA.
Giulio TononiWisconsin Institute for Sleep and Consciousness, Department of Psychiatry, University of Wisconsin, Madison, USA.
Seong-Whan LeeDepartment of Brain and Cognitive Engineering, Korea University, Seoul, Korea. sw.lee@korea.ac.kr.

Funding

Investigating Cognitive &Neural Bases of Working MemoryR01MH064498 · NIMH · UNIVERSITY OF WISCONSIN-MADISON · PI POSTLE, BRADLEY R · 2003 to 2020
$6.7M
Establishing a biomarker for reflective awareness in brain-injured patientsF32NS089348 · NINDS · UNIVERSITY OF WISCONSIN-MADISON · PI BAIRD, BENJAMIN · 2015 to 2017
$169k
NIMH NIH HHS R01 MH064498NINDS NIH HHS F32 NS089348
6 · The paper itself

Abstract

The neuronal connectivity patterns that differentiate consciousness from unconsciousness remain unclear. Previous studies have demonstrated that effective connectivity, as assessed by transcranial magnetic stimulation combined with electroencephalography (TMS-EEG), breaks down during the loss of consciousness. This study investigated changes in EEG connectivity associated with consciousness during non-rapid eye movement (NREM) sleep following parietal TMS. Compared with unconsciousness, conscious experiences during NREM sleep were associated with reduced phase-locking at low frequencies (<4 Hz). Transitivity and clustering coefficient in the delta and theta bands were also significantly lower during consciousness compared to unconsciousness, with differences in the clustering coefficient observed in scalp electrodes over parietal-occipital regions. There were no significant differences in Granger-causality patterns in frontal-to-parietal or parietal-to-frontal connectivity between reported unconsciousness and reported consciousness. Together these results suggest that alterations in spectral and spatial characteristics of network properties in posterior brain areas, in particular decreased local (segregated) connectivity at low frequencies, is a potential indicator of consciousness during sleep.

Indexed as

ElectroencephalographyTranscranial Magnetic StimulationAlgorithmsConsciousnessEye MovementsFemaleHumansMaleNerve NetSleepUnconsciousnessYoung Adult

Identifiers

PMID30914674
PMCPMC6435892

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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.