Brain scans reveal how stuttering works in new drug study
NCT ID NCT07215884
First seen Jun 27, 2026 · Last updated Aug 20, 2026 · Updated 2 times
Summary
This study gives aripiprazole, a drug that affects dopamine, to 40 adults who stutter to see how it changes brain activity during speech. Researchers use brain scans and audio recordings to measure how the brain processes sound before and during speaking. The goal is to better understand the brain pathways involved in stuttering, not to test a treatment.
This is an AI summary of the original study and may miss details. Read our disclaimer.
Study facts
What this study's own registry entry says, in plain language.
- Phase
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Phase 1
The first testing in people. Mainly checks safety and dose, usually in a small group.
- Participants
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About 25 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Sep 2025
- Expected to finish
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Aug 2027
An estimate. End dates often move.
- Lead sponsor
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Other sponsor
The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
- Ages
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18 to 65 years
- Sex
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Anyone
- Healthy volunteers
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Accepted
You do not need to have the condition being studied to take part.
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Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: * native speakers of American English * for adults who stutter, presence of stuttering will be confirmed, with onset before age 6 years * Normal hearing * Ages of 18 to 65 years * healthy adults without hearing-language difficulties Exclusion Criteria: * self-reported speech-language-hearing difficulties other than stuttering * self-reported neurological or psychological problems * other medications (drugs that affect dopaminergic system and/or benzodiazepines)
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
How to take part
Only the study team decides who joins. These are the ways to reach them.
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The places running it
1 site. The list below names each one and where it is.
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The official record
ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.
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A doctor treating you
A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.
Contacts and locations
Locations
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Biomagentic Imaging Lab
RECRUITINGSan Francisco, California, 94143, United States
More trials for these conditions
Other studies related to the condition(s) this trial covers.
- Can a once-daily pill ease stuttering? a trial puts lumateperone to the test.
- Brain scans and speech tasks aim to unlock the secrets of stuttering
- Can an app help people who stutter speak more fluently?
- Brain zaps show promise for stuttering relief
- Brain zaps for stuttering? tiny trial tests rTMS
- Brain zaps may unlock fluency for people who stutter