NCT07222163

Stuttering and Neuromodulation

• Status: Recruiting
• Phase: N/A
• Study type: Interventional
• Enrollment: 16 (estimated)
• Sponsor: NYU Langone Health · Academic / Other
• Sex: All
• Age: 18 Years – 65 Years
• Healthy volunteers: Not accepted

Summary

The purpose of this study is to collect preliminary data on the efficacy of transcranial direct current stimulation (tDCS) combined with traditional behavioral techniques to reduce stuttering severity and negative impact in adults who stutter. The study also aims to explore neuroplastic changes (i.e., regional activation and functional connectivity) resulting from combined tDCS + speech therapy.

Conditions

• Stuttering

Interventions

Type	Name	Description
DEVICE	Soterix Medical 1x1 tDCS system	Stimulation (2.0 mA for 30 minutes) will occur during speech therapy sessions focused on practicing speech techniques. Sham stimulation will mimic the physical sensation without active current.
BEHAVIORAL	Speech therapy sessions	Each of the ten weekly sessions will begin with 15 minutes of strategy practice, providing participants with the opportunity to rehearse light contact and easy onset techniques prior to the tDCS-enhanced speaking task.

Timeline

• Start date: 2025-09-04
• Primary completion: 2027-05-01
• Completion: 2027-10-01
• First posted: 2025-10-29
• Last updated: 2025-10-29

Locations

1 site across 1 country: United States

Regulatory

• FDA-regulated device study