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Updated: Aug 2, 2026
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Laboratory Administration of Transcutaneous Auricular Vagus Nerve Stimulation (taVNS): Technique, Targeting, and Considerations
Published on: January 7, 2019
Far field potentials from the brain stem after transcutaneous vagus nerve stimulation
A J Fallgatter1, B Neuhauser, M J Herrmann
1Department of Psychiatry and Psychotherapy, University Hospital, Würzburg, Germany. afallgat@mail.uni-wuerzburg.de
Journal of Neural Transmission (Vienna, Austria : 1996)
|December 11, 2003
Summary
Researchers developed a new method to measure vagus nerve function using transcutaneous electric stimulation. This technique recorded a Vagus Sensory Evoked Potential (VSEP), offering a potential diagnostic tool for neurological conditions.
Area of Science:
- Neuroscience
- Neurology
- Psychiatry
Background:
- The vagus nerve is implicated in neuropsychiatric disorders like Alzheimer's and Parkinson's.
- Vagus nerve stimulation shows therapeutic potential for epilepsy and depression.
- Current methods to assess vagus nerve function are lacking.
Purpose of the Study:
- To investigate the feasibility of assessing vagus nerve function via transcutaneous electric stimulation.
- To establish a novel method for measuring vagus nerve activity.
Main Methods:
- Utilized transcutaneous electric stimulation of the auricular branch of the vagus nerve.
- Recorded Vagus Sensory Evoked Potentials (VSEP) as far-field potentials.
- Applied techniques similar to early acoustic evoked potentials.
Main Results:
- Successfully recorded a clear and reproducible Vagus Sensory Evoked Potential (VSEP).
- The VSEP likely originates from the vagus nerve nuclei in the brainstem.
- Demonstrated the feasibility of the non-invasive stimulation approach in healthy subjects.
Conclusions:
- A novel, non-invasive method (VSEP) for assessing vagus nerve function has been developed.
- Further research is required to validate interindividual stability and test-retest reliability.
- This method holds potential for future diagnostic and therapeutic applications in neurology and psychiatry.
