Brain zaps show promise for stuttering relief

NCT ID NCT06278233

Completed Symptom relief Sponsor: Biruni University Source: ClinicalTrials.gov ↗

First seen Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This study tested whether a mild electrical current applied to the scalp for 5 days in a row could help adults who stutter speak more fluently. 36 participants received either real or sham stimulation while doing fluency exercises. Researchers measured changes in stuttering during reading and conversation right after treatment and one week later.

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, drug-free treatment to improve fluency in adults who stutter.
What could go wrong: This is a small, early-stage study with only 36 participants. The effects may be temporary or not work for everyone. More research is needed.

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 stutter disorder Stuttering

As listed by the trial registrant

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

STUTTERING, ADULT

Contacts and locations

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Locations

Biruni University

Istanbul, Zeytinburnu, 34015, Turkey (Türkiye)

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