Ridgewell and their team found these results out of the meta-analysis of 19 studies: 

- there is some support for the theory that taVNS (Transcutaneous Auricular Vagus Nerve Stimulation) improves response inhibition, particularly as tasks increase in difficulty.

- taVNS does not have a consistent effect on attention shifts/selection.

- taVNS does not have a substantial amount of evidence when it comes to supporting memory.

Effects of transcutaneous auricular VNS in healthy individuals

This type of VNS is non-invasive (meaning it's not surgically inserted) and it is inexpensive, low-risk, easy to administer, and portable. 

Santa Clara University

- Effects of transcutaneous auricular VNS in healthy individuals
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Research for Vagal nerve stimulation

(No Date/Author) Transcutaneous Auricular Vagus Nerve Stimulation. Soterix Medical. https://soterixmedical.com/research/tavns

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