Evidence map›Paper›PMID 25391304›Full record

ArticleNeurology2014

Altered functional connectivity in seizure onset zones revealed by fMRI intrinsic connectivity.

Hyang Woon Lee, Jagriti Arora, Xenophon Papademetris, Fuyuze Tokoglu, Michiro Negishi, Dustin Scheinost, Pue Farooque, Hal Blumenfeld, Dennis D Spencer, R Todd Constable

Abstract read
In one paragraph

Article in Neurology, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 35 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
35citing 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

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

  1. Pooled it
  2. Pooled it
  3. Article
  4. Review
  5. Resting-state functional MRI in pediatric epilepsy: a narrative review.Child's nervous system : ChNS : official journal of the International Society for Pediatric Neurosurgery · 2025
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  20. Individual localization value of resting-state fMRI in epilepsy presurgical evaluation: A combined study with stereo-EEG.Clinical neurophysiology : official journal of the International Federation of Clinical Neurophysiology · 2021
    Article
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

10 authors.

Hyang Woon LeeFrom the Department of Neurology (H.W.L.), Ewha Womans University School of Medicine and Ewha Medical Research Institute, Seoul, Korea; and Departments of Neurology (H.W.L., P.F., H.B.), Diagnostic Radiology (H.W.L., J.A., X.P., F.T., M.N., R.T.C.), Biomedical Engineering (X.P., D.S., R.T.C.), Neurosurgery (H.B., D.D.S., R.T.C.), and Neurobiology (H.B.), Yale University School of Medicine, New Haven, CT. leeh@ewha.ac.kr.
Jagriti AroraFrom the Department of Neurology (H.W.L.), Ewha Womans University School of Medicine and Ewha Medical Research Institute, Seoul, Korea; and Departments of Neurology (H.W.L., P.F., H.B.), Diagnostic Radiology (H.W.L., J.A., X.P., F.T., M.N., R.T.C.), Biomedical Engineering (X.P., D.S., R.T.C.), Neurosurgery (H.B., D.D.S., R.T.C.), and Neurobiology (H.B.), Yale University School of Medicine, New Haven, CT.
Xenophon PapademetrisFrom the Department of Neurology (H.W.L.), Ewha Womans University School of Medicine and Ewha Medical Research Institute, Seoul, Korea; and Departments of Neurology (H.W.L., P.F., H.B.), Diagnostic Radiology (H.W.L., J.A., X.P., F.T., M.N., R.T.C.), Biomedical Engineering (X.P., D.S., R.T.C.), Neurosurgery (H.B., D.D.S., R.T.C.), and Neurobiology (H.B.), Yale University School of Medicine, New Haven, CT.
Fuyuze TokogluFrom the Department of Neurology (H.W.L.), Ewha Womans University School of Medicine and Ewha Medical Research Institute, Seoul, Korea; and Departments of Neurology (H.W.L., P.F., H.B.), Diagnostic Radiology (H.W.L., J.A., X.P., F.T., M.N., R.T.C.), Biomedical Engineering (X.P., D.S., R.T.C.), Neurosurgery (H.B., D.D.S., R.T.C.), and Neurobiology (H.B.), Yale University School of Medicine, New Haven, CT.
Michiro NegishiFrom the Department of Neurology (H.W.L.), Ewha Womans University School of Medicine and Ewha Medical Research Institute, Seoul, Korea; and Departments of Neurology (H.W.L., P.F., H.B.), Diagnostic Radiology (H.W.L., J.A., X.P., F.T., M.N., R.T.C.), Biomedical Engineering (X.P., D.S., R.T.C.), Neurosurgery (H.B., D.D.S., R.T.C.), and Neurobiology (H.B.), Yale University School of Medicine, New Haven, CT.
Dustin ScheinostFrom the Department of Neurology (H.W.L.), Ewha Womans University School of Medicine and Ewha Medical Research Institute, Seoul, Korea; and Departments of Neurology (H.W.L., P.F., H.B.), Diagnostic Radiology (H.W.L., J.A., X.P., F.T., M.N., R.T.C.), Biomedical Engineering (X.P., D.S., R.T.C.), Neurosurgery (H.B., D.D.S., R.T.C.), and Neurobiology (H.B.), Yale University School of Medicine, New Haven, CT.
Pue FarooqueFrom the Department of Neurology (H.W.L.), Ewha Womans University School of Medicine and Ewha Medical Research Institute, Seoul, Korea; and Departments of Neurology (H.W.L., P.F., H.B.), Diagnostic Radiology (H.W.L., J.A., X.P., F.T., M.N., R.T.C.), Biomedical Engineering (X.P., D.S., R.T.C.), Neurosurgery (H.B., D.D.S., R.T.C.), and Neurobiology (H.B.), Yale University School of Medicine, New Haven, CT.
Hal BlumenfeldFrom the Department of Neurology (H.W.L.), Ewha Womans University School of Medicine and Ewha Medical Research Institute, Seoul, Korea; and Departments of Neurology (H.W.L., P.F., H.B.), Diagnostic Radiology (H.W.L., J.A., X.P., F.T., M.N., R.T.C.), Biomedical Engineering (X.P., D.S., R.T.C.), Neurosurgery (H.B., D.D.S., R.T.C.), and Neurobiology (H.B.), Yale University School of Medicine, New Haven, CT.
Dennis D SpencerFrom the Department of Neurology (H.W.L.), Ewha Womans University School of Medicine and Ewha Medical Research Institute, Seoul, Korea; and Departments of Neurology (H.W.L., P.F., H.B.), Diagnostic Radiology (H.W.L., J.A., X.P., F.T., M.N., R.T.C.), Biomedical Engineering (X.P., D.S., R.T.C.), Neurosurgery (H.B., D.D.S., R.T.C.), and Neurobiology (H.B.), Yale University School of Medicine, New Haven, CT.
R Todd ConstableFrom the Department of Neurology (H.W.L.), Ewha Womans University School of Medicine and Ewha Medical Research Institute, Seoul, Korea; and Departments of Neurology (H.W.L., P.F., H.B.), Diagnostic Radiology (H.W.L., J.A., X.P., F.T., M.N., R.T.C.), Biomedical Engineering (X.P., D.S., R.T.C.), Neurosurgery (H.B., D.D.S., R.T.C.), and Neurobiology (H.B.), Yale University School of Medicine, New Haven, CT.

Funding

Yale University Clinical and Translational Science Award ProgramUL1TR000142 · NCATS · YALE UNIVERSITY · PI SHERWIN, ROBERT S · 2012 to 2015
$31.8M
Neuroimaging Sciences Training ProgramT32DA022975 · NIDA · YALE UNIVERSITY · PI Graeme F Mason, Rajita Sinha · 2007 to 2026
$5.7M
Functional Neuroimaging in Childhood Absence EpilepsyR01NS055829 · NINDS · YALE UNIVERSITY · PI BLUMENFELD, HAL · 2006 to 2016
$3.2M
Method for Measuring Functional Subunits in Human CortexR01EB009666 · NIBIB · YALE UNIVERSITY · PI CONSTABLE, R TODD · 2010 to 2013
$1.4M
NIBIB NIH HHS EB009666-02NINDS NIH HHS NS055829
6 · The paper itself

Abstract

objectiveThe purpose of this study was to investigate functional connectivity (FC) changes in epileptogenic networks in intractable partial epilepsy obtained from resting-state fMRI by using intrinsic connectivity contrast (ICC), a voxel-based network measure of degree that reflects the number of connections to each voxel.

methodsWe measured differences between intrahemispheric- and interhemispheric-ICC (ICCintra-inter) that could reveal localized connectivity abnormalities in epileptogenic zones while more global network changes would be eliminated when subtracting these values. The ICCintra-inter map was compared with the seizure onset zone (SOZ) based on intracranial EEG (icEEG) recordings in 29 patients with at least 1 year of postsurgical follow-up. Two independent reviewers blindly interpreted the icEEG and fMRI data, and the concordance rates were compared for various clinical factors.

resultsConcordance between the icEEG SOZ and ICCintra-inter map was observed in 72.4% (21/29) of the patients, which was higher in patients with good surgical outcome, especially in those patients with temporal lobe epilepsy (TLE) or lateral temporal seizure localization. Concordance was also better in the extratemporal lobe epilepsy than the TLE group. In 85.7% (18/21) of the cases, the ICCintra-inter values were negative in the SOZ, indicating decreased FC within the epileptic hemisphere relative to between hemispheres.

conclusionsAssessing alterations in FC using fMRI-ICC map can help localize the SOZ, which has potential as a noninvasive presurgical diagnostic tool to improve surgical outcome. In addition, the method reveals that, in focal epilepsy, both intrahemispheric- and interhemispheric-FC may be altered, in the presence of both regional as well as global network abnormalities.

Indexed as

AdolescentAdultBrainBrain MappingChildElectrodes, ImplantedElectroencephalographyFemaleFollow-Up StudiesFunctional LateralityHumansMagnetic Resonance ImagingMaleMiddle AgedNeural PathwaysRest

Identifiers

PMID25391304
PMCPMC4277677

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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.