Evidence map›Paper›PMID 31465970›Full record

ArticleClinical neurophysiology : official journal of the International Federation of Clinical Neurophysiology2019

Multi-feature localization of epileptic foci from interictal, intracranial EEG.

Jan Cimbalnik, Petr Klimes, Vladimir Sladky, Petr Nejedly, Pavel Jurak, Martin Pail, Robert Roman, Pavel Daniel, Hari Guragain, Benjamin Brinkmann and 2 more

Open access · greenAbstract read
In one paragraph

Article in Clinical neurophysiology : official journal of the International Federation of Clinical Neurophysiology, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 41 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
41citing papers in PubMed, 2 pooled it
5.4field-weighted citation impact, top 4% 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

41 citing papers in PubMed, 2 syntheses or guidelines pooled it, 83 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

12 authors at 4 institutions in 2 countries.

Jan CimbalnikInternational Clinical Research Center, St. Anne's University Hospital, Brno, Czech Republic; Mayo Systems Electrophysiology Laboratory, Department of Neurology, Mayo Clinic, 200 First St SW, Rochester, MN 55905, USA. Electronic address: jan.cimbalnik@fnusa.cz.
Petr KlimesInternational Clinical Research Center, St. Anne's University Hospital, Brno, Czech Republic; Mayo Systems Electrophysiology Laboratory, Department of Neurology, Mayo Clinic, 200 First St SW, Rochester, MN 55905, USA; Institute of Scientific Instruments, The Czech Academy of Sciences, Brno, Czech Republic.
Vladimir SladkyInternational Clinical Research Center, St. Anne's University Hospital, Brno, Czech Republic; Mayo Systems Electrophysiology Laboratory, Department of Neurology, Mayo Clinic, 200 First St SW, Rochester, MN 55905, USA.
Petr NejedlyInternational Clinical Research Center, St. Anne's University Hospital, Brno, Czech Republic; Mayo Systems Electrophysiology Laboratory, Department of Neurology, Mayo Clinic, 200 First St SW, Rochester, MN 55905, USA; Institute of Scientific Instruments, The Czech Academy of Sciences, Brno, Czech Republic.
Pavel JurakInstitute of Scientific Instruments, The Czech Academy of Sciences, Brno, Czech Republic.
Martin PailBrno Epilepsy Center, Department of Neurology, St. Anne's University Hospital and Faculty of Medicine, Masaryk University, Brno, Czech Republic.
Robert RomanBehavioral and Social Neuroscience Research Group, CEITEC - Central European Institute of Technology, Masaryk University, Brno, Czech Republic.
Pavel DanielBrno Epilepsy Center, Department of Neurology, St. Anne's University Hospital and Faculty of Medicine, Masaryk University, Brno, Czech Republic.
Hari GuragainMayo Systems Electrophysiology Laboratory, Department of Neurology, Mayo Clinic, 200 First St SW, Rochester, MN 55905, USA.
Benjamin BrinkmannMayo Systems Electrophysiology Laboratory, Department of Neurology, Mayo Clinic, 200 First St SW, Rochester, MN 55905, USA; Department of Physiology and Biomedical Engineering, Mayo Clinic, 200 First St SW, Rochester, MN 55905, USA.
Milan BrazdilBrno Epilepsy Center, Department of Neurology, St. Anne's University Hospital and Faculty of Medicine, Masaryk University, Brno, Czech Republic; Behavioral and Social Neuroscience Research Group, CEITEC - Central European Institute of Technology, Masaryk University, Brno, Czech Republic.
Greg WorrellMayo Systems Electrophysiology Laboratory, Department of Neurology, Mayo Clinic, 200 First St SW, Rochester, MN 55905, USA; Department of Physiology and Biomedical Engineering, Mayo Clinic, 200 First St SW, Rochester, MN 55905, USA.
Mayo Clinic · USCentral European Institute of Technology · CZMasaryk University · CZCzech Academy of Sciences, Institute of Scientific Instruments · CZ

Funding

Microscale EEG interictal dynamics & transition into seizure in humans & animalsR01NS078136 · NINDS · MAYO CLINIC ROCHESTER · PI STEAD, SQUIRE MATT · 2012 to 2016
$1.7M
Microseizures, Ultra-slow & High Frequency Oscillations: Biomarkers of epilepsyR01NS063039 · NINDS · MAYO CLINIC ROCHESTER · PI WORRELL, GREGORY A · 2009 to 2013
$1.5M
NINDS NIH HHS R01 NS063039NINDS NIH HHS R01 NS078136
6 · The paper itself

Abstract

objectiveWhen considering all patients with focal drug-resistant epilepsy, as high as 40-50% of patients suffer seizure recurrence after surgery. To achieve seizure freedom without side effects, accurate localization of the epileptogenic tissue is crucial before its resection. We investigate an automated, fast, objective mapping process that uses only interictal data.

methodsWe propose a novel approach based on multiple iEEG features, which are used to train a support vector machine (SVM) model for classification of iEEG electrodes as normal or pathologic using 30 min of inter-ictal recording.

resultsThe tissue under the iEEG electrodes, classified as epileptogenic, was removed in 17/18 excellent outcome patients and was not entirely resected in 8/10 poor outcome patients. The overall best result was achieved in a subset of 9 excellent outcome patients with the area under the receiver operating curve = 0.95.

conclusionSVM models combining multiple iEEG features show better performance than algorithms using a single iEEG marker. Multiple iEEG and connectivity features in presurgical evaluation could improve epileptogenic tissue localization, which may improve surgical outcome and minimize risk of side effects. SIGNIFICANCE: In this study, promising results were achieved in localization of epileptogenic regions by SVM models that combine multiple features from 30 min of inter-ictal iEEG recordings.

Indexed as

AdultAgedElectrodes, ImplantedElectroencephalographyEpilepsies, PartialFemaleHumansMaleMiddle AgedRetrospective StudiesYoung AdultConnectivityDrug resistant epilepsyEpileptogenic zone localizationHigh frequency oscillationsMachine learningMulti-feature approach

Identifiers

PMID31465970
PMCPMC6759804
OpenAlexW2966772656

What OpenQuestion holds

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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.