Tragus based Vagus Nerve Stimulation for Stress Reduction


Non-invasive vagus nerve stimulation is fast becoming a popular alternative treatment method for various health disorders. The authors investigated the effects of auricular vagus nerve stimulation at tragus for activating the parasympathetic nervous system to reduce stress, in light of mixed results from other studies. Stimulation frequency of 25 Hz with a pulse-width of 200 μs was administered at tragus with ECG data recorded during pre- and post-stimulation trials to investigate changes in the low-frequency (LF) and high-frequency (HF) parameters of heart rate variability (HRV). The results from five subjects demonstrate an increase in the HF component and a decrease in LF when comparing pre- and post- stimulation values, denoting that VNS stimulated more of the parasympathetic activity. The LF/HF ratio was reduced for all participants after stimulation, with an average reduction of 64:5% observed. Overall, this study has indicated the feasibility of using tragus as a stimulation site to stimulate the vagus nerve; tragus being easier to administrate than many alternative sites while still being effective for stress reduction.

Publication DOI:
Divisions: College of Engineering & Physical Sciences > School of Engineering and Technology > Mechanical, Biomedical & Design
Additional Information: Funding Information: The project was funded by Enabling Innovation: Research to Application (EIRA, Research England’s Connecting Capability Fund, CCF) grant RD005 - MindSpire Proof of Concept. Copyright © 2021 by SCITEPRESS – Science and Technology Publications, Lda.
Event Title: 14th International Joint Conference on Biomedical Engineering Systems and Technologies
Event Type: Other
Event Dates: 2021-03-01 - 2021-03-04
Uncontrolled Keywords: Electrocardiogram,Stress Reduction,Tragus,Vagus Nerve Stimulation,Biomedical Engineering,Electrical and Electronic Engineering
ISBN: 978-989-758-490-9
Last Modified: 28 May 2024 07:30
Date Deposited: 11 Mar 2021 09:40
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Related URLs: https://www.sci ... 010222201640168 (Publisher URL)
http://www.scop ... tnerID=8YFLogxK (Scopus URL)
PURE Output Type: Conference contribution
Published Date: 2021-03-04
Authors: Mouli, Surej (ORCID Profile 0000-0002-2876-3961)
Palaniappan, Ramaswamy
Ollis, Jane
McLoughlin, Ian
Kanegaonkar, Rahul
Arora, Sunil

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