Evidence map›Paper›PMID 31006860›Full record

ArticleEpilepsia2019

Reproducibility of interictal spike propagation in children with refractory epilepsy.

Samuel B Tomlinson, Jeremy N Wong, Erin C Conrad, Benjamin C Kennedy, Eric D Marsh

Open access · greenAbstract read
In one paragraph

Article in Epilepsia, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.

0numbers the graph read from it
0cells of the map it votes in
9citing papers in PubMed
0.7field-weighted citation impact, top 31% of its field
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

9 citing papers in PubMed, 22 citations in OpenAlex.

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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 at 2 institutions in 1 country.

Samuel B TomlinsonDivision of Neurosurgery, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania.
Jeremy N WongDivision of Neurology, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania.
Erin C ConradDepartment of Neurology, Hospital of the University of Pennsylvania, Philadelphia, Pennsylvania.
Benjamin C KennedyDivision of Neurosurgery, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania.
Eric D MarshDivision of Neurology, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania.
Children's Hospital of Philadelphia · USHospital of the University of Pennsylvania · US

Funding

IN VIVO STUDIES OF THE EPILEPTIC HIPPOCAMPUSR01NS033310 · NINDS · UNIVERSITY OF CALIFORNIA LOS ANGELES · PI JEROME NONE ENGEL, Richard Staba · 1994 to 2026
$7.5M
The Intellectual and Developmental Disabilities Research Center at CHOP/PennU54HD086984 · NICHD · CHILDREN'S HOSP OF PHILADELPHIA · PI SCHULTZ, ROBERT THOMAS · 2016 to 2020
$6.3M
The International epilepsy electrophysiology databaseU24NS063930 · NINDS · UNIVERSITY OF PENNSYLVANIA · PI LITT, BRIAN · 2010 to 2014
$5.6M
NRSA Training CoreTL1TR002000 · NCATS · UNIVERSITY OF ROCHESTER · PI THAKAR, JUILEE, VAN WIJNGAARDEN, EDWIN · 2016 to 2024
$4.1M
New Electrographic Biomarkers of EpileptogenesisR01NS065877 · NINDS · UNIVERSITY OF CALIFORNIA LOS ANGELES · PI BRAGIN, ANATOL · 2010 to 2018
$4.0M
Virtual Resection to Treat EpilepsyR01NS099348 · NINDS · UNIVERSITY OF PENNSYLVANIA · PI BASSETT, DANIELLE SMITH, LITT, BRIAN · 2016 to 2019
$2.3M
Seizure generation and network excitability in Arx related Infantile SpasmsR01NS082761 · NINDS · CHILDREN'S HOSP OF PHILADELPHIA · PI MARSH, ERIC D · 2013 to 2017
$1.8M
NCATS NIH HHS TL1 TR002000NICHD NIH HHS U54 HD086984NINDS NIH HHS R01 NS033310NINDS NIH HHS R01 NS065877NINDS NIH HHS R01 NS082761NINDS NIH HHS R01 NS099348NINDS NIH HHS R01NS099348NINDS NIH HHS U24 NS063930
6 · The paper itself

Abstract

objectiveInterictal spikes are a characteristic feature of invasive electroencephalography (EEG) recordings in children with refractory epilepsy. Spikes frequently co-occur across multiple brain regions with discernable latencies, suggesting that spikes can propagate through distributed neural networks. The purpose of this study was to examine the long-term reproducibility of spike propagation patterns over hours to days of interictal recording.

methodsTwelve children (mean age 13.1 years) were retrospectively studied. A mean ± standard deviation (SD) of 47.2 ± 40.1 hours of interictal EEG recordings were examined per patient (range 17.5-166.5 hours). Interictal recordings were divided into 30-minute segments. Networks were extracted based on the frequency of spike coactivation between pairs of electrodes. For each 30-minute segment, electrodes were assigned a "Degree Preference (DP)" based on the tendency to appear upstream or downstream within propagation sequences. The consistency of DPs across segments ("DP-Stability") was quantified using the Spearman rank correlation.

resultsRegions exhibited highly stable preferences to appear upstream, intermediate, or downstream in spike propagation sequences. Across networks, the mean ± SD DP-Stability was 0.88 ± 0.07, indicating that propagation patterns observed in 30-minute segments were representative of the patterns observed in the full interictal window. At the group level, regions involved in seizure generation appeared more upstream in spike propagation sequences. SIGNIFICANCE: Interictal spike propagation is a highly reproducible output of epileptic networks. These findings shed new light on the spatiotemporal dynamics that may constrain the network mechanisms of refractory epilepsy.

Indexed as

ElectroencephalographyAdolescentChildDrug Resistant EpilepsyElectric Stimulation TherapyElectrodes, ImplantedFemaleHumansMaleNerve NetReproducibility of ResultsRetrospective StudiesSubdural Spaceepilepsy surgeryinterictal spikeinvasive EEGnetworkpropagation

Identifiers

PMID31006860
PMCPMC6488404
OpenAlexW2941594697

What OpenQuestion holds

Textmetadata
LicenceTDM
Read underepoch 390

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.