Evidence map›Paper›PMID 35132096›Full record

ArticleScientific reports2022

The potential of invasive and non-invasive vagus nerve stimulation to improve verbal memory performance in epilepsy patients.

Ann Mertens, Stefanie Gadeyne, Emma Lescrauwaet, Evelien Carrette, Alfred Meurs, Veerle De Herdt, Frank Dewaele, Robrecht Raedt, Marijke Miatton, Paul Boon and 1 more

Registry-linked trialOpen access · goldAbstract read
In one paragraph

Article in Scientific reports, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT05031208 (Research on the Acute and Long Term Effects on Memory and the Mechanism of Action of Vagus Nerve Stimulation in Patients With Refractory Epilepsy), which is not on this map. Cited by 28 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
28citing papers in PubMed, 1 pooled it
3.4field-weighted citation impact, top 7% 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.

NCT05031208 nacompletednot on this map

Research on the Acute and Long Term Effects on Memory and the Mechanism of Action of Vagus Nerve Stimulation in Patients With Refractory Epilepsy

TypeinterventionalSponsorUniversity Hospital, GhentRan2018 to 2020Enrolled16ConditionsRefractory EpilepsyArmsMemory task
3 · Its place in the literature

Who cites it

28 citing papers in PubMed, 1 synthesis or guideline pooled it, 46 citations in OpenAlex.

  1. Pooled it
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  4. Article
  5. Neurotransmitter Systems in Alzheimer's Disease.Current issues in molecular biology · 2026
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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

11 authors at 2 institutions in 2 countries.

Ann MertensDepartment of Neurology, 4BRAIN Research Group, Ghent University Hospital, 9000, Ghent, Belgium. ann.mertens@ugent.be.
Stefanie GadeyneDepartment of Neurology, 4BRAIN Research Group, Ghent University Hospital, 9000, Ghent, Belgium.
Emma LescrauwaetDepartment of Neurology, 4BRAIN Research Group, Ghent University Hospital, 9000, Ghent, Belgium.
Evelien CarretteDepartment of Neurology, 4BRAIN Research Group, Ghent University Hospital, 9000, Ghent, Belgium.
Alfred MeursDepartment of Neurology, 4BRAIN Research Group, Ghent University Hospital, 9000, Ghent, Belgium.
Veerle De HerdtDepartment of Neurology, 4BRAIN Research Group, Ghent University Hospital, 9000, Ghent, Belgium.
Frank DewaeleDepartment of Neurosurgery, Ghent University Hospital, Ghent, Belgium.
Robrecht RaedtDepartment of Neurology, 4BRAIN Research Group, Ghent University Hospital, 9000, Ghent, Belgium.
Marijke MiattonDepartment of Neurology, 4BRAIN Research Group, Ghent University Hospital, 9000, Ghent, Belgium.
Paul BoonDepartment of Neurology, 4BRAIN Research Group, Ghent University Hospital, 9000, Ghent, Belgium.
Kristl VonckDepartment of Neurology, 4BRAIN Research Group, Ghent University Hospital, 9000, Ghent, Belgium.
Ghent University Hospital · BEEindhoven University of Technology · NL

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

It has been demonstrated that acute vagus nerve stimulation (VNS) improves word recognition memory in epilepsy patients. Transcutaneous auricular vagus nerve stimulation (taVNS) has gained interest as a non-invasive alternative to improve cognition. In this prospective randomized cross-over study, we investigated the effect of both invasive VNS and taVNS on verbal memory performance in 15 patients with drug-resistant epilepsy. All patients conducted a word recognition memory paradigm in 3 conditions: VNS ON, VNS OFF and taVNS (3-period 3-treatment cross-over study design). For each condition, patients memorized 21 highlighted words from text paragraphs. Afterwards, the intervention was delivered for 30 s. Immediate recall and delayed recognition scores were obtained for each condition. This memory paradigm was repeated after 6 weeks of VNS therapy in 2 conditions: VNS ON and VNS OFF (2-period 2-treatment cross-over study design). Acute VNS and taVNS did not improve verbal memory performance. Immediate recall and delayed recognition scores were significantly improved after 6 weeks of VNS treatment irrespective of the acute intervention. We can conclude that the previously described positive effects of invasive VNS on verbal memory performance could not be replicated with invasive VNS and taVNS. An improved verbal memory performance was seen after 6 weeks of VNS treatment, suggesting that longer and more repetitive stimulation of the vagal pathway is required to modulate verbal memory performance.Clinical trial registration number: NCT05031208.

Indexed as

Word Association TestsCross-Over StudiesEpilepsyHumansMemory, Short-TermProspective StudiesVagus NerveVagus Nerve Stimulation

Identifiers

PMID35132096
PMCPMC8821667
OpenAlexW4220822658

What OpenQuestion holds

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LicenceCC BY
Read underepoch 390

Registered trials

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.