Evidence map›Paper›PMID 32015406›Full record

ArticleScientific reports2020

Quantitative spatio-temporal characterization of epileptic spikes using high density EEG: Differences between NREM sleep and REM sleep.

Xuan Kang, Melanie Boly, Graham Findlay, Benjamin Jones, Klevest Gjini, Rama Maganti, Aaron F Struck

Abstract read
In one paragraph

Article in Scientific reports, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed, 1 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

17 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
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  4. Dreams interrupted: characteristics of REM sleep-associated seizures and status epilepticus.Journal of clinical sleep medicine : JCSM : official publication of the American Academy of Sleep Medicine · 2025
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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

7 authors.

Xuan KangUniversity of Wisconsin-Madison Department of Neurology, Madison, Wisconsin, 53705, USA.
Melanie BolyUniversity of Wisconsin-Madison Department of Neurology, Madison, Wisconsin, 53705, USA.
Graham FindlayUniversity of Wisconsin-Madison Department of Neurology, Madison, Wisconsin, 53705, USA.
Benjamin JonesUniversity of Wisconsin-Madison Department of Neurology, Madison, Wisconsin, 53705, USA.
Klevest GjiniUniversity of Wisconsin-Madison Department of Neurology, Madison, Wisconsin, 53705, USA.
Rama MagantiUniversity of Wisconsin-Madison Department of Neurology, Madison, Wisconsin, 53705, USA.
Aaron F StruckUniversity of Wisconsin-Madison Department of Neurology, Madison, Wisconsin, 53705, USA. afstruck@wisc.edu.ORCID http://orcid.org/0000-0002-9103-1798

Funding

The Juvenile Myoclonic Epilepsy Connectome ProjectR01NS111022 · NINDS · UNIVERSITY OF WISCONSIN-MADISON · PI STRUCK, AARON F · 2020 to 2024
$3.1M
Characterizing epileptic spikes as travelling waves using high-density EEGR03NS096379 · NINDS · UNIVERSITY OF WISCONSIN-MADISON · PI BOLY, MELANIE · 2016 to 2017
$153k
NINDS NIH HHS R01 NS111022NINDS NIH HHS R03 NS096379
6 · The paper itself

Abstract

In this study, we applied high-density EEG recordings (HD-EEG) to quantitatively characterize the fine-grained spatiotemporal distribution of inter-ictal epileptiform discharges (IEDs) across different sleep stages. We quantified differences in spatial extent and duration of IEDs at the scalp and cortical levels using HD-EEG source-localization, during non-rapid eye movement (NREM) sleep and rapid eye movement (REM) sleep, in six medication-refractory focal epilepsy patients during epilepsy monitoring unit admission. Statistical analyses were performed at single subject level and group level across different sleep stages for duration and distribution of IEDs. Tests were corrected for multiple comparisons across all channels and time points. Compared to NREM sleep, IEDs during REM sleep were of significantly shorter duration and spatially more restricted. Compared to NREM sleep, IEDs location in REM sleep also showed a higher concordance with electrographic ictal onset zone from scalp EEG recording. This study supports the localizing value of REM IEDs over NREM IEDs and suggests that HD-EEG may be of clinical utility in epilepsy surgery work-up.

Indexed as

AdultElectroencephalographyEpilepsyFemaleHumansMalePolysomnographyScalpSleep, REMSleep, Slow-Wave

Identifiers

PMID32015406
PMCPMC6997449

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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.