Using brain stimulation to improve speech fluency in adults who stutter

Is this trial a fit for you?

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This study investigates the effects of bihemispheric transcranial direct current stimulation (tDCS) on speech fluency in adults with developmental stuttering. Participants will receive either active or sham stimulation for five consecutive days while engaging in fluency-facilitating activities. The study aims to determine if the active stimulation enhances reading and speaking fluency compared to the sham condition. Assessments will be conducted before, immediately after, and one week post-stimulation to evaluate changes in fluency. A total of 36 adults will be enrolled in this double-blind, sham-controlled trial.

Why it matters

Who can join: the full rules

Inclusion Criteria:

* developmental stuttering
* age between 18 and 60 years
* right hand dominant

Exclusion Criteria:

* history of seizures, head trauma, hearing problems, cochlear implant, intracranial metal implantation, medications that affects the central nervous system, implanted neurostimulators, cardiac pacemakers, or medication infusion devices
* any speech and language disorder other than developmental stuttering
* neurological or psychiatric disorders, brain surgery, tumours, neurodevelopmental disorders, or attention deficit hyperactivity disorder

Where it's running

• Biruni University
  Istanbul, Zeytinburnu, Turkey Recruiting

Study contacts

• Principal investigator: Feyzanur Ocak, Slp — Atlas University
• Study coordinator: Çağdaş karsan, Asst. prof.
• Email: cagkarsan@gmail.com
• Phone: 05552934133

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

• Lumateperone for childhood-onset stuttering in adults

  A small study tests whether lumateperone can help reduce stuttering in adults who began stuttering in childhood.

  Recruiting Phase 2 CSTrials Inc. · Costa Mesa, California · NCT07734103

• Transcranial magnetic stimulation for adult stuttering

  We will test whether repeated transcranial magnetic stimulation (rTMS) to a language-related brain area can reduce stuttering in adults who stutter.

  Recruiting Kansas State University · Manhattan, Kansas · NCT07389694

• Aripiprazole and sensorimotor function in adults who stutter

  We will test whether a single 10 mg dose of aripiprazole versus placebo changes speech sensorimotor processing and improves fluency in adults who stutter.

  Recruiting Phase 1 University of California, San Francisco · San Francisco, California · NCT07215884

• Motor brain circuits for speech production in adults who stutter

  We will use MRI while adults who stutter speak to test how motor brain areas and their connections work during continuous speech.

  Recruiting University of Michigan · Ann Arbor, Michigan · NCT07180628

• Delta-frequency alternating-current brain stimulation paired with choral reading for stuttering

  This project will try mild, noninvasive alternating-current brain stimulation (tACS) paired with choral reading to see if it reduces stuttering in English-speaking children and adults who currently stutter.

  Recruiting University of Michigan · Ann Arbor, Michigan · NCT06740968

• Exploring the nature and treatment of stuttering

  This study is testing new ways to treat stuttering by looking at the different factors that affect it in both one-language and multiple-language speakers.

  Recruiting University of Texas at Austin · Austin, Texas · NCT05908123

How to take part

1. Review the eligibility criteria above with your treating physician.
2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.