Zapping the vagus nerve while training the brain: a new recipe for sharper aging?

NCT ID NCT04276805

Completed Knowledge-focused Sponsor: University of Florida Source: ClinicalTrials.gov ↗

First seen Jul 27, 2026 · Last updated Jul 28, 2026 · Updated 1 time

Summary

This trial tests whether pairing a gentle, non-invasive nerve stimulation (tVNS) with daily computer-based cognitive exercises can improve memory and thinking in healthy older adults. Over two weeks, participants receive either active or sham stimulation while doing brain-training tasks. The goal is to see if this combination can help delay or reverse age-related cognitive decline.

What this could mean

Our plain-language read of the trial. This is informational only — not medical advice or a prediction.

Active substance: a device that gently stimulates the vagus nerve through the skin (transcutaneous vagal nerve stimulation) paired with web-based cognitive training exercises
What this could lead to: If it works, this approach could point toward a drug-free way to sharpen memory and thinking in healthy older adults.
What could go wrong: This is a very early, small trial with only 45 participants. The nerve stimulation may cause discomfort, and the cognitive benefits, if any, might not be large or lasting.

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As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

AGING

Contacts and locations

Locations

University of Arizona

Tucson, Arizona, 85721, United States
University of Florida

Gainesville, Florida, 32610, United States

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