Home › Stuttering › NCT06181149

Auditory Prediction and Error Evaluation in the Speech of Individuals Who Stutter

Who can join

Ages 3 and older · All sexes · Healthy volunteers welcome

Inclusion Criteria:

* being a monolingual, native speaker of American English
* absence of developmental, psychological, neurological, or communication disorders (other than developmental stuttering) as confirmed by a certified research SLP
* normal (age-appropriate) binaural pure-tone hearing threshold (0.5-4k Hz; ≤25 dB HL for younger than 70 years, and ≤35 dB HL for older than 70 years)
* not taking any medications that affect the central nervous system
* absence of safety contra-indication for tDCS, TMS and MRI (for adults)
* scoring at the 20th percentile or higher on standardized speech-language tests (for children)

Exclusion Criteria:

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About the study

Stuttering negatively impacts communication and reduces the overall quality of life and well-being of individuals who stutter. This study will provide a strong foundation for developing neural and behavioral interventions for stuttering. Participants will be asked to name pictures, read words/sentences silently or aloud, and listen to speech and nonspeech sounds while their speech, muscle, and brain signals are collected. Some participants may also receive brain stimulation while reading and speaking.

What is being tested

• Delaying speech initiation (behavioral)
• Auditory errors and pre-speech auditory modulation (behavioral)
• Contributions of the speech premotor cortex to pre-speech auditory modulation (behavioral)
• Delaying auditory feedback (behavioral)

Sponsor: Arizona State University · Participants: 300 · Started: Jan 1, 2024

Contact the study team

• Ayoub Daliri, PhD · Phone: 4807278397

Official record on ClinicalTrials.gov — NCT06181149

Locations in the U.S.

Conditions

• Stuttering

From ClinicalTrials.gov, data retrieved Sep 30, 2026. Each study sets its own eligibility; the study team decides who can join.