Brain zaps before naps may sharpen aging minds

NCT ID NCT06938672

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

First seen Jun 25, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This study tested whether a 20-minute session of gentle brain stimulation (tDCS) before an afternoon nap could improve sleep patterns linked to memory and thinking in healthy adults aged 60 and older. Twelve participants completed computer tasks, received either real or fake tDCS, and took a monitored nap. Researchers measured sleep brain activity and cognitive performance to see if the stimulation made a difference.

What this could mean

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

Active substance: transcranial direct current stimulation (tDCS)
What this could lead to: If it works, this could point toward a simple, non-invasive way to boost memory and thinking in older adults by improving nap sleep.
What could go wrong: This is a very small, early study with only 12 participants, so results may not apply to everyone. The effects of tDCS on sleep and cognition are still uncertain.

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Conditions

The condition(s) this trial relates to.

cognitive disorder sleep disorder

As listed by the trial registrant

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

COGNITION HEALTHY AGING SLEEP

Contacts and locations

Locations

Northumbria University

Newcastle upon Tyne, NE1 8ST, United Kingdom

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