Evidence map›Paper›PMID 35429045›Full record

ArticleAnnals of neurology2022

The Optimal Target and Connectivity for Deep Brain Stimulation in Lennox-Gastaut Syndrome.

Aaron E L Warren, Linda J Dalic, Kristian J Bulluss, Annie Roten BAppSci, Wesley Thevathasan, John S Archer

Open access · hybridAbstract read
In one paragraph

Article in Annals of neurology, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 35 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
35citing papers in PubMed, 1 pooled it
9.2field-weighted citation impact, top 1% 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

35 citing papers in PubMed, 1 synthesis or guideline pooled it, 70 citations in OpenAlex.

  1. Pooled it
  2. Trial
  3. A guide to neuromodulation in drug-resistant epilepsy.Epileptic disorders : international epilepsy journal with videotape · 2026
    Review
  4. Observational
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  7. Article
  8. Review
  9. Article
  10. Article
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  12. Review
  13. Article
  14. Article
  15. Biomarkers for Epilepsy Deep Brain Stimulation.Journal of clinical neurophysiology : official publication of the American Electroencephalographic Society · 2025
    Review
  16. Article
  17. Review
  18. Review
  19. Article
  20. The thalamus: Structure, function, and neurotherapeutics.Neurotherapeutics : the journal of the American Society for Experimental NeuroTherapeutics · 2025
    Review
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

6 authors at 3 institutions in 1 country.

Aaron E L WarrenDepartment of Medicine (Austin Health), University of Melbourne, Heidelberg, Vic, Australia.ORCID 0000-0001-6534-2800
Linda J DalicDepartment of Medicine (Austin Health), University of Melbourne, Heidelberg, Vic, Australia.ORCID 0000-0001-8335-1348
Kristian J BullussBionics Institute, East Melbourne, Vic, Australia.
Annie Roten BAppSciDepartment of Neurology, Austin Health, Heidelberg, Vic, Australia.
Wesley ThevathasanDepartment of Neurology, Austin Health, Heidelberg, Vic, Australia.
John S ArcherDepartment of Medicine (Austin Health), University of Melbourne, Heidelberg, Vic, Australia.
The University of Melbourne · AUBionics Institute · AUAustin Health · AU

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveDeep brain stimulation (DBS) can reduce seizures in Lennox-Gastaut syndrome (LGS). However, little is known about the optimal target and whether efficacy depends on connectivity of the stimulation site. Using outcome data from the ESTEL trial, we aimed to determine the optimal target and connectivity for DBS in LGS.

methodsA total of 20 patients underwent bilateral DBS of the thalamic centromedian nucleus (CM). Outcome was percentage seizure reduction from baseline after 3 months of DBS, defined using three measures (monthly seizure diaries, 24-hour scalp electroencephalography [EEG], and a novel diary-EEG composite). Probabilistic stimulation mapping identified thalamic locations associated with higher/lower efficacy. Two substitute diffusion MRI datasets (a normative dataset from healthy subjects and a "disease-matched" dataset from a separate group of LGS patients) were used to calculate structural connectivity between DBS sites and a map of areas known to express epileptic activity in LGS, derived from our previous EEG-fMRI research.

resultsResults were similar across the three outcome measures. Stimulation was most efficacious in the anterior and inferolateral "parvocellular" CM border, extending into the ventral lateral nucleus (posterior subdivision). There was a positive association between diary-EEG composite seizure reduction and connectivity to areas of a priori EEG-fMRI activation, including premotor and prefrontal cortex, putamen, and pontine brainstem. In contrast, outcomes were not associated with baseline clinical variables.

interpretationEfficacious CM-DBS for LGS is linked to stimulation of the parvocellular CM and the adjacent ventral lateral nucleus, and is associated with connectivity to, and thus likely modulation of, the "secondary epileptic network" underlying the shared electroclinical manifestations of LGS. ANN NEUROL 2022;92:61-74.

Indexed as

Deep Brain StimulationEpilepsyLennox Gastaut SyndromeElectroencephalographyHumansSeizures

Identifiers

PMID35429045
PMCPMC9544037
OpenAlexW4223901640

What OpenQuestion holds

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LicenceCC BY-NC
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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.