Evidence map›Paper›PMID 28971013›Full record

ArticleNeuroImage. Clinical2017

Presurgical thalamocortical connectivity is associated with response to vagus nerve stimulation in children with intractable epilepsy.

George M Ibrahim, Priya Sharma, Ann Hyslop, Magno R Guillen, Benjamin R Morgan, Simeon Wong, Taylor J Abel, Lior Elkaim, Iahn Cajigas, Ashish H Shah and 9 more

Open access · goldAbstract read
In one paragraph

Article in NeuroImage. Clinical, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 48 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
48citing papers in PubMed, 1 pooled it
2.6field-weighted citation impact, top 10% 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

48 citing papers in PubMed, 1 synthesis or guideline pooled it, 92 citations in OpenAlex.

  1. Pooled it
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  7. Preoperative MEG reveals differential brain network characteristics in drug-resistant epilepsy patients based on vagus nerve stimulation response.Neurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology · 2026
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  17. Identifying responders to vagus nerve stimulation based on microstructural features of thalamocortical tracts in drug-resistant epilepsy.Neurotherapeutics : the journal of the American Society for Experimental NeuroTherapeutics · 2024
    Article
  18. Review
  19. Article
  20. Neurostimulation treatments for epilepsy: Deep brain stimulation, responsive neurostimulation and vagus nerve stimulation.Neurotherapeutics : the journal of the American Society for Experimental NeuroTherapeutics · 2024
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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

19 authors at 6 institutions in 2 countries.

George M IbrahimDivision of Neurosurgery, Department of Surgery, Hospital for Sick Children, University of Toronto, Toronto, ON, Canada.
Priya SharmaDepartment of Neurology, Brain Institute, Nicklaus Children's Hospital, Miami, FL, USA.
Ann HyslopDepartment of Neurology, Brain Institute, Nicklaus Children's Hospital, Miami, FL, USA.
Magno R GuillenDepartment of Radiology, Nicklaus Children's Hospital, Miami, FL, USA.
Benjamin R MorganFaculty of Medicine, University of Toronto, Toronto, ON, Canada.
Simeon WongDivision of Diagnostic Imaging, Hospital for Sick Children, Toronto, ON, Canada.
Taylor J AbelDivision of Neurosurgery, Brain Institute, Nicklaus Children's Hospital, Miami, FL, USA.
Lior ElkaimDepartment of Neurosurgery, Mattel Children's Hospital, David Geffen School of Medicine at University of California Los Angeles, Los Angeles, California, USA.
Iahn CajigasDivision of Neurosurgery, Brain Institute, Nicklaus Children's Hospital, Miami, FL, USA.
Ashish H ShahDivision of Neurosurgery, Brain Institute, Nicklaus Children's Hospital, Miami, FL, USA.
Aria FallahDepartment of Neurosurgery, Mattel Children's Hospital, David Geffen School of Medicine at University of California Los Angeles, Los Angeles, California, USA.
Alexander G WeilDivision of Neurosurgery, CHU Sainte-Justine Hospital, University of Montreal, Montreal, QC, Canada.
Nolan AltmanDepartment of Radiology, Nicklaus Children's Hospital, Miami, FL, USA.
Byron BernalDepartment of Radiology, Nicklaus Children's Hospital, Miami, FL, USA.
Santiago MedinaDepartment of Radiology, Nicklaus Children's Hospital, Miami, FL, USA.
Elysa WidjajaDivision of Diagnostic Imaging, Hospital for Sick Children, Toronto, ON, Canada.
Prasanna JayakarDepartment of Neurology, Brain Institute, Nicklaus Children's Hospital, Miami, FL, USA.
John RaghebDivision of Neurosurgery, Brain Institute, Nicklaus Children's Hospital, Miami, FL, USA.
Sanjiv BhatiaDivision of Neurosurgery, Brain Institute, Nicklaus Children's Hospital, Miami, FL, USA.
Miami Children's Hospital · USHospital for Sick Children · CAMattel Children's Hospital · USUniversity of Miami · USCentre Hospitalier Universitaire Sainte-Justine · CAUniversity of Toronto · CA

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Although chronic vagus nerve stimulation (VNS) is an established treatment for medically-intractable childhood epilepsy, there is considerable heterogeneity in seizure response and little data are available to pre-operatively identify patients who may benefit from treatment. Since the therapeutic effect of VNS may be mediated by afferent projections to the thalamus, we tested the hypothesis that intrinsic thalamocortical connectivity is associated with seizure response following chronic VNS in children with epilepsy. Twenty-one children (ages 5-21 years) with medically-intractable epilepsy underwent resting-state fMRI prior to implantation of VNS. Ten received sedation, while 11 did not. Whole brain connectivity to thalamic regions of interest was performed. Multivariate generalized linear models were used to correlate resting-state data with seizure outcomes, while adjusting for age and sedation status. A supervised support vector machine (SVM) algorithm was used to classify response to chronic VNS on the basis of intrinsic connectivity. Of the 21 subjects, 11 (52%) had 50% or greater improvement in seizure control after VNS. Enhanced connectivity of the thalami to the anterior cingulate cortex (ACC) and left insula was associated with greater VNS efficacy. Within our test cohort, SVM correctly classified response to chronic VNS with 86% accuracy. In an external cohort of 8 children, the predictive model correctly classified the seizure response with 88% accuracy. We find that enhanced intrinsic connectivity within thalamocortical circuitry is associated with seizure response following VNS. These results encourage the study of intrinsic connectivity to inform neural network-based, personalized treatment decisions for children with intractable epilepsy.

Indexed as

AlgorithmsAdolescentChildChild, PreschoolDrug Resistant EpilepsyFemaleHumansImage Interpretation, Computer-AssistedMagnetic Resonance ImagingMaleNeural PathwaysPrecision MedicineSupport Vector MachineThalamusTreatment OutcomeVagus Nerve StimulationFunctional connectivityIntrinsic connectivity networksLow frequency neural oscillationsResting-state fMRIVNS

Identifiers

PMID28971013
PMCPMC5619991
OpenAlexW2759988690

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
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.