Evidence map›Paper›PMID 36385467›Full record

ArticleEpilepsia2023

Responsive neurostimulation with low-frequency stimulation.

Juan Luis Alcala-Zermeno, Keith Starnes, Nicholas M Gregg, Greg Worrell, Brian N Lundstrom

Abstract read
In one paragraph

Article in Epilepsia, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
23citing papers in PubMed, 1 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

23 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. Trial
  3. A guide to neuromodulation in drug-resistant epilepsy.Epileptic disorders : international epilepsy journal with videotape · 2026
    Review
  4. Article
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  9. Review
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  11. On brain stimulation in epilepsy.Brain : a journal of neurology · 2025
    Review
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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.

Juan Luis Alcala-ZermenoDepartment of Neurology, Mayo Clinic, Rochester, Minnesota, USA.ORCID 0000-0003-3143-965X
Keith StarnesDepartment of Child and Adolescent Neurology, Mayo Clinic, Rochester, Minnesota, USA.
Nicholas M GreggDepartment of Neurology, Mayo Clinic, Rochester, Minnesota, USA.ORCID 0000-0002-6151-043X
Greg WorrellDepartment of Neurology, Mayo Clinic, Rochester, Minnesota, USA.
Brian N LundstromDepartment of Neurology, Mayo Clinic, Rochester, Minnesota, USA.ORCID 0000-0002-5310-5549

Funding

Thalamic stimulation to prevent impaired consciousness in epilepsyUH3NS112826 · NINDS · YALE UNIVERSITY · PI BLUMENFELD, HAL · 2021 to 2023
$5.4M
Neurophysiologically Based Brain State Tracking & Modulation in Focal EpilepsyUH3NS095495 · NINDS · MAYO CLINIC ROCHESTER · PI WORRELL, GREGORY A · 2019 to 2021
$2.8M
Localizing value and underlying mechanisms of low frequency EEG for focal epilepsyK23NS112339 · NINDS · MAYO CLINIC ROCHESTER · PI LUNDSTROM, BRIAN NILS · 2019 to 2023
$935k
NINDS NIH HHS K23 NS112339NINDS NIH HHS UH3 NS095495NINDS NIH HHS UH3 NS112826
6 · The paper itself

Abstract

Deep brain stimulation and responsive neurostimulation (RNS) use high-frequency stimulation (HFS) per the pivotal trials and manufacturer-recommended therapy protocols. However, not all patients respond to HFS. In this retrospective case series, 10 patients implanted with the RNS System were programmed with low-frequency stimulation (LFS) to treat their seizures; nine of these patients were previously treated with HFS (100 Hz or greater). LFS was defined as frequency < 10 Hz. Burst duration was increased to at least 1000 ms. With HFS, patients had a median seizure reduction (MSR) of 13% (interquartile range [IQR] = -67 to 54) after a median of 19 months (IQR = 8-49). In contrast, LFS was associated with a 67% MSR (IQR = 13-95) when compared to HFS and 76% MSR (IQR = 43-91) when compared to baseline prior to implantation. Charge delivered per hour and pulses per day were not significantly different between HFS and LFS, although time stimulated per day was longer for LFS (228 min) than for HFS (7 min). There were no LFS-specific adverse effects reported by any of the patients. LFS could represent an alternative, effective method for delivering stimulation in focal drug-resistant epilepsy patients treated with the RNS System.

Indexed as

Deep Brain StimulationDrug Resistant EpilepsyElectrodes, ImplantedHumansRetrospective StudiesSeizuresalternative parameterslow-frequency stimulationneuromodulationneurostimulationresponsive neurostimulation

Identifiers

PMID36385467
PMCPMC9970035

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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.