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ClinicalTrials.gov public records Last synced Oct 4, 2026, 3:01 AM EDT

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Showing 25–38 of 38 matching trials from the live ClinicalTrials.gov search.
Filters: Condition: Phonology Impairment Clear all
Completed No phase listed Observational Accepts healthy volunteers

Ultrasound Evaluation of Tongue Movements in Speech and Swallowing

NCT00001167
View directory record Official record
Conditions
Otorhinolaryngologic Disease, Otorhinolaryngologic Neoplasm, Pharyngeal Neoplasm, Polymyositis, Speech Disorder
Interventions
Not listed
Lead sponsor
National Institutes of Health Clinical Center (CC)
NIH
Eligibility
Not listed
Enrollment
570 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
1979 – 2004
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Mar 4, 2008 · Synced Oct 4, 2026, 3:01 AM EDT
Completed Phase 1 Interventional

Improve Speech Using an In-the-ear Device in Parkinson's Disease

NCT00488657
View directory record Official record
Conditions
Parkinson's Disease, Dysarthria
Interventions
SpeechEasy Model ITC
Device
Lead sponsor
Rush University Medical Center
Other
Eligibility
25 Years to 90 Years
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2010
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Jan 18, 2013 · Synced Oct 4, 2026, 3:01 AM EDT
Completed Not applicable Interventional

Intensive Dysarthria Sessions in Adults and Children With Down Syndrome

NCT01684670
View directory record Official record
Conditions
Dysarthria, Down Syndrome
Interventions
Speech sessions
Behavioral
Lead sponsor
Duke University
Other
Eligibility
8 Years and older
Enrollment
5 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2016
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Nov 23, 2016 · Synced Oct 4, 2026, 3:01 AM EDT
Recruiting Not applicable Interventional

Speech and Arm Combined Exergame

NCT06817941
View directory record Official record
Conditions
Cerebral Palsy (CP), Dysarthria
Interventions
Speech only, Hand/Arm only, Speech and arm combined
Behavioral
Lead sponsor
Rutgers, The State University of New Jersey
Other
Eligibility
8 Years to 17 Years
Enrollment
15 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2027
U.S. locations
1
States / cities
Newark, New Jersey
Source: ClinicalTrials.gov public record
Updated Jun 12, 2026 · Synced Oct 4, 2026, 3:01 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Age-related Correlates of Treatment for Late-acquired Sounds

NCT03663972
View directory record Official record
Conditions
Speech Sound Disorder, Phonology Disorder, Phonology Impairment, Phonological Disorder, Articulation Disorders in Children, Developmental Phonological Disorder, Speech Disorders, Speech Delay, Articulation Disorders, Developmental
Interventions
articulation therapy, phonologic treatment
Behavioral
Lead sponsor
University of Wyoming
Other
Eligibility
4 Years to 8 Years
Enrollment
16 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2020
U.S. locations
1
States / cities
Laramie, Wyoming
Source: ClinicalTrials.gov public record
Updated Jun 18, 2020 · Synced Oct 4, 2026, 3:01 AM EDT
Terminated No phase listed Observational Accepts healthy volunteers

Central Mechanisms in Speech Motor Control Studied With H215O PET

NCT00001308
View directory record Official record
Conditions
Communication Disorder, Healthy, Stuttering, Tourette Syndrome, Voice Disorder
Interventions
Not listed
Lead sponsor
National Institute on Deafness and Other Communication Disorders (NIDCD)
NIH
Eligibility
18 Years to 85 Years
Enrollment
1,163 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
1992 – 2016
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Dec 17, 2019 · Synced Oct 4, 2026, 3:01 AM EDT
Recruiting Not applicable Interventional

Listener Training for Improved Intelligibility of People With Parkinson's Disease

NCT06815263
View directory record Official record
Conditions
Dysarthria, Hypokinetic
Interventions
Listener Training
Behavioral
Lead sponsor
Utah State University
Other
Eligibility
18 Years and older
Enrollment
360 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2029
U.S. locations
2
States / cities
Tallahassee, Florida • Logan, Utah
Source: ClinicalTrials.gov public record
Updated Apr 23, 2026 · Synced Oct 4, 2026, 3:01 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Efficacy of Voice Treatment for Parkinson's Disease

NCT00123084
View directory record Official record
Conditions
Parkinson's Disease, Dysphagia, Dysarthria
Interventions
Voice/Respiration Treatment, Speech/Articulation Treatment
Behavioral
Lead sponsor
University of Colorado, Boulder
Other
Eligibility
45 Years to 85 Years
Enrollment
620 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2002 – 2012
U.S. locations
2
States / cities
Denver, Colorado • San Antonio, Texas
Source: ClinicalTrials.gov public record
Updated Jul 31, 2018 · Synced Oct 4, 2026, 3:01 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Remote Speech and Swallowing Assessment in ALS

NCT04889898
View directory record Official record
Conditions
Amyotrophic Lateral Sclerosis
Interventions
Digital recording of speech and swallow sounds using the Beiwe Digital Health App on a personal smartphone, Modified Barium Swallow Study (MBSS), Speech Intelligibility Test (SIT), SIT Scoring
Device · Radiation · Behavioral
Lead sponsor
Milton S. Hershey Medical Center
Other
Eligibility
18 Years and older
Enrollment
200 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2026
U.S. locations
1
States / cities
Hershey, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jun 29, 2026 · Synced Oct 4, 2026, 3:01 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

A Systematic Investigation of Phonetic Complexity Effects on Articulatory Motor Performance in Progressive Dysarthria

NCT03613038
View directory record Official record
Conditions
Amyotrophic Lateral Sclerosis, Parkinson Disease
Interventions
Phonetic complexity effects on speech motor performance
Behavioral
Lead sponsor
University of Missouri-Columbia
Other
Eligibility
19 Years to 90 Years
Enrollment
100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2022
U.S. locations
2
States / cities
Fairway, Kansas • Columbia, Missouri
Source: ClinicalTrials.gov public record
Updated May 17, 2022 · Synced Oct 4, 2026, 3:01 AM EDT
Recruiting Not applicable Interventional

Voiceitt for People With Impairments in Speech

NCT06874322
View directory record Official record
Conditions
Speech Impairment, Speech Disorder
Interventions
Voiceitt
Other
Lead sponsor
University of Pittsburgh
Other
Eligibility
13 Years and older
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2027
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Sep 4, 2026 · Synced Oct 4, 2026, 3:01 AM EDT
Completed Not applicable Interventional

Emotional Prosody Treatment in Parkinson's

NCT01956266
View directory record Official record
Conditions
Parkinson Disease
Interventions
Emotional prosodic treatment
Behavioral
Lead sponsor
VA Office of Research and Development
Federal
Eligibility
45 Years to 85 Years
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2017
U.S. locations
1
States / cities
Gainesville, Florida
Source: ClinicalTrials.gov public record
Updated Nov 18, 2019 · Synced Oct 4, 2026, 3:01 AM EDT
Active, not recruiting Not applicable Interventional Accepts healthy volunteers

The Role of Cerebellum in Speech

NCT03972202
View directory record Official record
Conditions
Cerebellar Ataxia, Dysarthria, Healthy
Interventions
MRI, TMS, Speech-motor behavioral testing
Diagnostic Test · Device · Behavioral
Lead sponsor
University of California, San Francisco
Other
Eligibility
18 Years to 75 Years
Enrollment
660 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2030
U.S. locations
3
States / cities
Berkeley, California • San Francisco, California • Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Oct 24, 2025 · Synced Oct 4, 2026, 3:01 AM EDT
Completed Not applicable Interventional Results available

An RCT of a Telemedicine Intervention for Hypokinetic Dysarthria in PD

NCT04617496
View directory record Official record
Conditions
Parkinson's Disease
Interventions
Combined speech and exercise intervention, Health education
Behavioral
Lead sponsor
VA Office of Research and Development
Federal
Eligibility
40 Years to 89 Years
Enrollment
104 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2025
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jan 7, 2026 · Synced Oct 4, 2026, 3:01 AM EDT