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IRCT20110928007657N5 IRCT 2026-03-17 Ahvaz University of Medical Sciences Effectiveness of adding Transcranial Direct Current Stimulation (tDCS) to the Camperdown program on the Stuttering Severity index in Adults Investigating the Effectiveness of adding Transcranial Direct Current Stimulation (tDCS) to the Camperdown program on the Stuttering Severity index in Adults with Stuttering: A Randomized Double-Blind Clinical Trial 2026-03-21 anticipated 40 Recruiting https://irct.ir/trial/89139 interventional Randomization: Randomized, Blinding: Double blinded, Placebo: Not used, Assignment: Parallel, Purpose: Treatment, Randomization description: Simple Randomized-block design Randomization will be performed by using Randomized-block design method through WINPEPI software as well as applying 4-block for each group. This software create a sequence of random numbers that is used to assign participants to one of the groups. The person who is responsible to make a random list will be blinded to participants, Blinding description: Blinding of participants is done using a sham method. Assessor blinding: The assessor is unfamiliar with the name, gender, and grouping of the study subjects. Blinding of the data analyst: The assessor is unfamiliar with the name, gender, and grouping of the study subjects. N/A Stuttering. Intervention 1: Intervention group:Electrical stimulation is provided using the Segal Stim AT-12 device from Pharmed Tajhiz Company, in tDCS mode. An electroencephalography cap will be used to identify the location of the stimulation, so the brain areas are designated on it with the international 10-20 system. Stimulation is performed by passing a current of 2 mA and a resolution of 0.1 mA between two 5 cm x 7 cm electrodes for 20 minutes.Simultaneously with the device's stimulation, a speech therapy program is presented at a slow and drawn-out pace. Intervention 2: Control group: In the control group, the device's electrical current will increase to 2 mA for 15 seconds and then immediately turn off. Simultaneously with the device's stimulation, a speech therapy program is presented at a slow and drawn-out pace. Yes - There is a plan to make this available What will be shared: Publishing an article, participating in a speech therapy scientific conference When: Access period starts 12 months after results are published. To whom: The data will be available to researchers working in academic and scientific institutions. Conditions: - Where to obtain: Peyman Zamani 09166176780 How to obtain: Email and phone Comments:
public Peyman Zamani
Golestan Blvd., Golestan Hos., School of Rehabilitation, Speech Therapy Department.
Ahvaz Iran (Islamic Republic of) 6135733133 009833743105 zamanipdrst@gmail.com Ahvaz University of Medical Sciences scientific Peyman Zamani
Golestan Blvd., Golestan Hos., School of Rehabilitation, Speech Therapy Department
Ahvaz Iran (Islamic Republic of) 6135733133 009833743105 zamanip@ajums.ac.ir Ahvaz University of Medical Sciences Iran (Islamic Republic of) Having developmental stuttering Having moderate to severe stuttering being Right-handed being Farsi-language Not receiving stuttering-related treatment in the past month prior to the start of the intervention 18 years 50 years Both Having skin lesions or bone defects in the skull area Presence of other speech disorders with stuttering Taking brain-stimulating drugs Having metal implants in the skull لکنت Treatment - Devices Treatment - Devices Intervention group:Electrical stimulation is provided using the Segal Stim AT-12 device from Pharmed Tajhiz Company, in tDCS mode. An electroencephalography cap will be used to identify the location of the stimulation, so the brain areas are designated on it with the international 10-20 system. Stimulation is performed by passing a current of 2 mA and a resolution of 0.1 mA between two 5 cm x 7 cm electrodes for 20 minutes.Simultaneously with the device's stimulation, a speech therapy program is presented at a slow and drawn-out pace. Control group: In the control group, the device's electrical current will increase to 2 mA for 15 seconds and then immediately turn off. Simultaneously with the device's stimulation, a speech therapy program is presented at a slow and drawn-out pace. Stuttering Severity. Timepoint: Before of intervention, After intervention, one month for follow up. Method of measurement: Questionnary of Stuttering Severity Scale. Quality of Life. Timepoint: Before of intervention, After intervention, one month for follow up. Method of measurement: Overall Assessment of the Speakers Experiences of Stuttering. Ahvaz University of Medical Sciences Approved 2025-12-06 Ethics committee of Ahvaz Jundishapur University of Medical Sciences Golestan Ave., Golestan Hospital., School of Rehabilitation, Speech Therapy Department. Ahvaz Khouzestan Iran (Islamic Republic of)