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October 9, 2021Open Access

Vagus nerve stimulation increases stomach-brain coupling via a vagal afferent pathway

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Key result

Right-sided transcutaneous auricular vagus nerve stimulation increased stomach-brain coupling in the nucleus of the solitary tract and midbrain, mirroring subjective hunger ratings.

Why the study?

A gastric network in the brain phase synchronized with stomach rhythm is established, but tools to perturb its function were lacking.

Does acute right-sided transcutaneous auricular vagus nerve stimulation improve stomach-brain coupling in unspecified subjects?

Comparison

Acute right-sided transcutaneous auricular vagus nerve stimulation (taVNS) vs sham stimulation

Design

Randomized crossover-design

Authors

SMSophie J. MüllerVTVanessa TeckentrupIRIgnacio Rebollo

Discussion

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Overview

taVNS may modulate appetite via NTS-midbrain coupling; extends preclinical mechanisms to humans and supports targeted neuromodulation trials.

Study Design

Type

RCT

Randomization

Crossover

Structured PICO

Does acute right-sided transcutaneous auricular vagus nerve stimulation improve stomach-brain coupling in unspecified subjects?

P
Population
Unspecified subjects
I
Intervention
Acute right-sided transcutaneous auricular vagus nerve stimulation (taVNS)
C
Comparator
Sham stimulation
O
Outcome
Stomach-brain couplingsurrogate

Transcutaneous vagus nerve stimulation increases stomach-brain coupling via an NTS-midbrain pathway, which correlates with subjective hunger ratings and may offer novel neuromodulatory treatments.

Cite This Study

Müller et al. (2021) reported an RCT. Right-sided transcutaneous auricular vagus nerve stimulation (taVNS) vs. Sham stimulation was evaluated on Stomach-brain coupling. Right-sided transcutaneous auricular vagus nerve stimulation increased stomach-brain coupling in the nucleus of the solitary tract and midbrain, mirroring subjective hunger ratings.

synapsesocial.com/papers/6a1c6e1194dbf6307b2fc3ddhttps://doi.org/10.1101/2021.10.07.463517
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Also Consider

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  1. 1Non-invasive stimulation of vagal afferents reduces gastric frequency2019 · 71 citations
  2. 2Neural correlates of future weight loss reveal a possible role for brain-gastric interactions2020 · 20 citations
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  4. 4The central organization of the vagus nerve innervating the stomach of the rat1985 · 496 citations
  5. 5The sensory and motor components of the cortical hierarchy are coupled to the rhythm of the stomach during rest2021 · 4 citations