Gentle zaps to the brain may ease language loss in dementia

NCT ID NCT04566731

Completed Symptom relief Sponsor: University of Pennsylvania Source: ClinicalTrials.gov ↗

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

Summary

This study tested whether a gentle, non-invasive brain stimulation technique called tDCS, combined with language therapy, could improve speech in 23 people with primary progressive aphasia (PPA). Participants received either real or fake (sham) stimulation daily for 10 days. Researchers measured language changes right after treatment and up to 24 weeks later, and also used brain scans to understand how the brain responds.

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 non-invasive way to temporarily boost language abilities in people with progressive aphasia.
What could go wrong: This is a small, early-stage study (23 people) testing short-term effects. The improvement may be modest or not last, and not everyone may benefit.

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

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Conditions

The condition(s) this trial relates to.

communication disorder primary progressive aphasia progressive non-fluent aphasia semantic dementia

As listed by the trial registrant

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

PRIMARY PROGRESSIVE APHASIA

Contacts and locations

Locations

University of Pennsylvania

Philadelphia, Pennsylvania, 19104, United States

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