The auricular branch of the vagus nerve runs superficially, which makes it a favorable target for non-invasive stimulation techniques to modulate vagal activity. For this reason, there have been many early-stage clinical trials on a diverse range of conditions. This systematic review on quality of evidence and clinical effects shows evidence supporting the potential in aVNS. See full text at Frontiers.
Reference:
Verma N, Mudge JD, Kasole M, Chen RC, Blanz SL, Trevathan JK, Lovett EG, Williams JC, Ludwig KA. Auricular Vagus Neuromodulation-A Systematic Review on Quality of Evidence and Clinical Effects. Front Neurosci. 2021 Apr 30;15:664740. doi: 10.3389/fnins.2021.664740. PMID: 33994937; PMCID: PMC8120162.
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