Ear zap to boost aging brain? new study tests nerve stimulation for memory

NCT ID NCT04908358

Ongoing Symptom relief Sponsor: Massachusetts General Hospital Source: ClinicalTrials.gov ↗

First seen Jun 27, 2026 · Last updated Jun 30, 2026 · Updated 2 times

Summary

This study tests whether a non-invasive electrical stimulation of the vagus nerve in the ear (called RAVANS) can improve memory and thinking in 126 older adults. Participants receive either real or sham stimulation during short sessions, and their memory is tested. The goal is to see if this gentle brain boost can help with 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: transcutaneous vagus nerve stimulation (tVNS/RAVANS)
What this could lead to: If it works, this could point toward a simple, non-invasive way to help maintain or improve memory and thinking in older adults.
What could go wrong: This is an early-stage study with 126 participants, testing a short-term effect. It may not produce lasting benefits, and results may not apply to everyone.

This is an AI summary of the original study and may miss details. Read our disclaimer.

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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

Massachusetts General Hospital

Charlestown, Massachusetts, 02129, United States

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