ArticleBMJ open2025
Effect of non-invasive transcutaneous auricular vagus nerve stimulation (taVNS) on non-motor symptoms in multiple sclerosis: study protocol for a randomised, controlled trial.
Article in BMJ open, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
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.
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.
Who cites it
2 citing papers in PubMed.
- Article
- Therapeutic potential of vagus nerve stimulation in neurodegenerative diseases: research progress and mechanisms.Frontiers in immunology · 2026Review
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
8 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
introductionResearch in people with relapsing remitting multiple sclerosis (PwRRMS) is increasingly focusing on non-motor symptoms like cognitive impairment, fatigue and depression. Due to the high negative impact on quality of life and high socioeconomic costs based on these symptoms, more specific research to improve non-motor symptoms is needed. Transcutaneous auricular vagus nerve stimulation (taVNS) has been found to be a cognitive enhancer in preclinical research and was successfully used for the treatment of psychiatric and neurological disorders to combat dysfunctional cognitive and affective processes. However, the capacity of taVNS to improve cognitive and other non-motor symptoms in PwRRMS has not been tested yet. The aim of this study is to evaluate the therapeutic potential of taVNS on cognitive processing speed. Based on ample evidence demonstrating that taVNS promotes adaptive cognitive and affective processes, we hypothesised that taVNS would alleviate cognitive processing speed in PwRRMS. METHODS AND ANALYSIS: This study protocol describes the prospective, single-centre, SHAM-controlled, single-blinded trial with a planned sample size of 60 participants (30 PwRRMS, with a diagnosis of multiple sclerosis according to McDonald criteria and 30 healthy controls; age: 18-50 years). The Symbol Digit Modalities Test (SDMT) will be used to determine cognitive processing speed, Beck Depression Inventory-II to determine depression and Fatigue Scale for Motor and Cognitive Functions to determine fatigue. The severity of multiple sclerosis will be assessed using the Expanded Disability Status Scale. After baseline assessment, a taVNS protocol (duration: 30 min, tolerance threshold, pulse width: 250 μs, stimulation frequency: 25 Hz, 30 s on/30 s off) will be applied, followed by post-intervention assessment. ETHICS AND DISSEMINATION: The study was reviewed and approved by the local ethics committee of the University Medical Centre Greifswald (study reference number: BB137/24). CLINICAL
trial registrationwww.drks.de, number: DRKS00034912. Study results will be disseminated through academic conferences as well as peer-reviewed publications. TRIAL REGISTRATION NUMBER: DRKS00034912.
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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.