Stimulation methods
taVNS
Definition
Transcutaneous auricular vagus nerve stimulation is an ear-based form of tVNS delivered through the skin at selected regions of the outer ear.
Aliases and abbreviations
taVNS · transcutaneous auricular VNS · auricular tVNS
Editorial record
Published: August 25, 2026 · Reviewed: August 25, 2026
Expanded definition
taVNS is a research and device-method family, not one standardised treatment. Studies differ in ear location, electrode design, waveform, intensity, session length, control condition, and participant group.
The method is commonly discussed in relation to the auricular branch of the vagus nerve, but the outer ear has mixed and overlapping innervation. Placement language should therefore remain anatomically careful.
A sensation can confirm that an electrode contacts the skin and that stimulation is perceived. Sensation alone cannot establish selective neural target engagement or a particular downstream effect.
What the term does not establish
Why the distinction matters
taVNS is the most precise term when both the through-the-skin route and the auricular location are known.
Main guide
A focused guide to taVNS, ear anatomy, placement language, and interpretation.
Read the auricular VNS guideRelated terms
Stimulation methods
Protocol and stimulation parameters
Protocol and stimulation parameters
Protocol and stimulation parameters
Safety and research
Measurement and interpretation
Editorial scope
This glossary entry supports general education. It does not diagnose, recommend treatment, or transfer findings from one VNS method, protocol, or device to another.