Cited by 25Vagus Nerve Stimulation ResearchMemory and Neural MechanismsGastrointestinal motility and disorders

Cognitive effects of subdiaphragmatic vagal deafferentation in rats

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Klarer, Melanie, Weber-Stadlbauer, Ulrike, Arnold, Myrtha, Langhans, Wolfgang, Meyer, Urs·2017·Neurobiology of Learning and Memory

Abstract

Vagal afferents are a crucial neuronal component of the gut-brain axis and mediate the information flow from the viscera to the central nervous system. Based on the findings provided by experiments involving vagus nerve stimulation, it has been suggested that vagal afferent signaling may influence various cognitive functions such as recognition memory and cognitive flexibility. Here, we examined this hypothesis using a rat model of subdiaphragmatic vagal deafferentation (SDA), the most complete and selective abdominal vagal deafferentation method existing to date. We found that SDA did not affect working memory in a nonspatial alternation task, nor did it influence short-, intermediate-, and long-term object recognition memory. SDA did also not affect the acquisition of positively reinforced left-right discrimination learning, but it facilitated the subsequent reversal left-right discrimination learning. The SDA-induced effects on reversal learning emerged in the absence of concomitant changes in motivation towards the positive reinforcer, indicating selective effects on cognitive flexibility. Taken together, these findings suggest that the relative contribution of vagal afferent signaling to cognitive functions is limited. At the same time, our study demonstrates that cognitive flexibility, at least in the domains of positively reinforced learning, is subjected to visceral modulation through abdominal vagal afferents.

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Crossref · 10.1016/j.nlm.2017.05.006

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  • Vagus nerve stimulation improves cognitive processes and has been attributed to modulation of central noradrenergic and GABA systems and neuronal adaptations in the amygdala, hippocampus, and prefrontal cortex.

    “Vagus nerve stimulation has been shown to improve cognitive processes and has been attributed to modulation of central noradrenergic and GABA systems, as well as neuronal adaptations within the amygdala, hippocampus, and prefrontal cortex (500).”

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Authors
Klarer, M., Weber-Stadlbauer, U., Arnold, M., Langhans, W., & Meyer, U.
Affiliations
  • ETH Zurich (CH)
  • University of Zurich (CH)
Corresponding author
Klarer, Melanie
Venue
Neurobiology of Learning and Memory
Publisher
Elsevier BV
Published
2017-07
Volume
142
Issue
Pt B
Pages
190-199
ISSN
1074-7427 (ISSN-L)
OpenAlex
W2612614742
Cited by
25
References
74
Citations by year
2026: 1 · 2025: 4 · 2024: 3 · 2023: 1 · 2022: 2 · 2021: 3 · 2020: 1 · 2019: 5 · 2018: 5
FWCI
1.50
Type
journal article
Language
en
Open access
Locations
  • Neurobiology of Learning and Memory (publishedVersion)
  • PubMed (publishedVersion)
  • Zurich Open Repository and Archive (University of Zurich) (acceptedVersion)
  • Zurich Open Repository and Archive (University of Zurich) (submittedVersion)
  • Zurich Open Repository and Archive (University of Zurich)
Funders
ETH Zurich, Switzerland (ETH-25_13-2)
Topics
  • Life Sciences › Neuroscience › Neurology › Vagus Nerve Stimulation Research
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Memory and Neural Mechanisms
  • Health Sciences › Medicine › Gastroenterology › Gastrointestinal motility and disorders
Keywords
vagal afferents, gut-brain axis, cognitive flexibility, reversal learning, object recognition memory, working memory, motivation, vagus nerve stimulation
MeSH terms
Abdomen, Afferent Pathways, Animals, Behavior, Animal, Male, Memory, Short-Term, Reversal Learning, Vagus Nerve, Rats, Sprague-Dawley, Recognition, Psychology, Rats

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