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Altered Auditory Feedback for Stuttering

N/A
Recruiting
Led By Satrajit Ghosh, PhD
Research Sponsored by Massachusetts Institute of Technology
Eligibility Criteria Checklist
Specific guidelines that determine who can or cannot participate in a clinical trial
Must have
Be older than 18 years old
Timeline
Screening 3 weeks
Treatment Varies
Follow Up calculated at the end of the study for time points: baseline, 1-week, 2-weeks, 3-weeks, and 4-weeks
Awards & highlights
No Placebo-Only Group

Summary

This trial tests if the Mumble Melody app can help people who stutter speak more fluently. The app changes how their voice sounds in real-time. Participants will use the app regularly and record their speech to see if it helps.

Who is the study for?
This trial is for U.S. residents who stutter, have a separate device with a mic and an Apple product with the required OS or chip. Participants must speak English and pass an initial screening showing more than 2.5% stuttering-like dysfluencies per syllable.
What is being tested?
The study tests if altered auditory feedback can help people who stutter speak more fluently. It looks at how this method works over a month outside of the lab environment.
What are the potential side effects?
Since this intervention involves auditory feedback, there may be no significant physical side effects, but participants might experience frustration or fatigue from prolonged use.

Timeline

Screening ~ 3 weeks
Treatment ~ Varies
Follow Up ~calculated at the end of the study for time points 1-week, 2-weeks, 3-weeks, and 4-weeks
This trial's timeline: 3 weeks for screening, Varies for treatment, and calculated at the end of the study for time points 1-week, 2-weeks, 3-weeks, and 4-weeks for reporting.

Treatment Details

Study Objectives

Study objectives can provide a clearer picture of what you can expect from a treatment.
Primary study objectives
Significant change in fluency in one of four modes (Unaltered, Whisper, Reverb, Harmonize) between the baseline testing session and the end of week 4.
Secondary study objectives
Duration of Mode Usage
Frequency of Mode Usage
Significant change in fluency for each mode in comparison to the baseline (No Auditory Feedback) condition, for each testing session
+6 more

Awards & Highlights

No Placebo-Only Group
All patients enrolled in this study will receive some form of active treatment.

Trial Design

1Treatment groups
Experimental Treatment
Group I: Altered Auditory FeedbackExperimental Treatment1 Intervention
Participants in this arm will use the Mumble Melody application over the course of 1 month
Treatment
First Studied
Drug Approval Stage
How many patients have taken this drug
Altered Auditory Feedback
2014
N/A
~50

Research Highlights

Information in this section is not a recommendation. We encourage patients to speak with their healthcare team when evaluating any treatment decision.
Mechanism Of Action
Side Effect Profile
Prior Approvals
Other Research
Common treatments for stuttering include speech therapy techniques such as Altered Auditory Vocal Feedback (AAF), which modifies the auditory perception of the speaker's voice to improve speech fluency. AAF devices delay or alter the pitch of the speaker's voice, which can help reduce stuttering by disrupting the auditory feedback loop that contributes to speech disfluencies. This matters for stuttering patients because it provides a non-invasive method to enhance speech fluency, potentially improving communication abilities and quality of life. Understanding these mechanisms helps patients and clinicians tailor interventions more effectively to individual needs.

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Who is running the clinical trial?

Massachusetts Institute of TechnologyLead Sponsor
99 Previous Clinical Trials
12,819,894 Total Patients Enrolled
Satrajit Ghosh, PhDPrincipal InvestigatorMassachusetts Institute of Technology
~40 spots leftby Dec 2025