- Conditions
- Spasmodic Dysphonia, Adductor Spasmodic Dysphonia, Voice Disorders
- Interventions
- Sensation testing
- Device
- Lead sponsor
- University of California, San Francisco
- Other
- Eligibility
- 18 Years to 85 Years
- Enrollment
- 13 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2021 – 2022
- U.S. locations
- 1
- States / cities
- San Francisco, California
Search Results
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Search by query text, NCT ID, condition, intervention, sponsor, city, state, recruitment status, phase, study type, healthy volunteer eligibility, sex, or age. Results are retrieved from ClinicalTrials.gov and synchronized into the directory. Search pages remain noindex by default.
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Showing 1–24
of 36
matching trials from the live ClinicalTrials.gov search.
Local D1 index available.
- Conditions
- Vocal Weakness(Post-BOTOX Injection)
- Interventions
- Amifampridine
- Drug
- Lead sponsor
- Augusta University
- Other
- Eligibility
- 18 Years and older
- Enrollment
- 18 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2021 – 2025
- U.S. locations
- 1
- States / cities
- Augusta, Georgia
- Conditions
- Spasmodic Dysphonia, Laryngeal Dystonia
- Interventions
- Vibro-tactile stimulation
- Device
- Lead sponsor
- University of Minnesota
- Other
- Eligibility
- 18 Years to 75 Years
- Enrollment
- 40 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2023 – 2024
- U.S. locations
- 1
- States / cities
- Minneapolis, Minnesota
- Conditions
- Spasmodic Dysphonia, Laryngeal Dystonia
- Interventions
- Not listed
- Lead sponsor
- Emory University
- Other
- Eligibility
- 18 Years to 85 Years
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2015 – 2016
- U.S. locations
- 2
- States / cities
- Atlanta, Georgia • St Louis, Missouri
- Conditions
- Spastic Dysphonia, Healthy
- Interventions
- airway interruption test
- Device
- Lead sponsor
- National Institute of Neurological Disorders and Stroke (NINDS)
- NIH
- Eligibility
- Not listed
- Enrollment
- 30 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2001 – 2003
- U.S. locations
- 1
- States / cities
- Bethesda, Maryland
- Conditions
- Spasmodic Dysphonia
- Interventions
- Laryngeal Vibration (Treatment), Laryngeal Vibration (Comparator)
- Device
- Lead sponsor
- University of Minnesota
- Other
- Eligibility
- 18 Years to 75 Years
- Enrollment
- 42 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2019 – 2022
- U.S. locations
- 1
- States / cities
- Minneapolis, Minnesota
- Conditions
- Phonation Disorder, Spastic Dysphonia, Voice Disorder
- Interventions
- Not listed
- Lead sponsor
- National Institute of Neurological Disorders and Stroke (NINDS)
- NIH
- Eligibility
- 20 Years to 80 Years
- Enrollment
- 370 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- Started 1998
- U.S. locations
- 1
- States / cities
- Bethesda, Maryland
- Conditions
- Dystonia
- Interventions
- Not listed
- Lead sponsor
- Emory University
- Other
- Eligibility
- 18 Years and older
- Enrollment
- 3,265 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2011 – 2020
- U.S. locations
- 34
- States / cities
- Birmingham, Alabama • Scottsdale, Arizona • Fountain Valley, California + 26 more
- Conditions
- Laryngeal Dystonia, Focal Dystonia
- Interventions
- repetitive transcranial magnetic stimulation (rTMS), sham rTMS
- Device
- Lead sponsor
- MGH Institute of Health Professions
- Other
- Eligibility
- 21 Years to 85 Years
- Enrollment
- 25 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2021 – 2026
- U.S. locations
- 1
- States / cities
- Boston, Massachusetts
- Conditions
- Laryngeal Dystonia, Spasmodic Dysphonia, Tremor
- Interventions
- Clinical assessments of laryngeal function
- Other
- Lead sponsor
- Massachusetts Eye and Ear Infirmary
- Other
- Eligibility
- 18 Years to 80 Years
- Enrollment
- 165 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2022 – 2027
- U.S. locations
- 1
- States / cities
- Boston, Massachusetts
- Conditions
- Adductor Spasmodic Dysphonia
- Interventions
- Voice Exercise
- Behavioral
- Lead sponsor
- University of Wisconsin, Madison
- Other
- Eligibility
- 21 Years to 70 Years · Female only
- Enrollment
- 15 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2014 – 2018
- U.S. locations
- 1
- States / cities
- Madison, Wisconsin
- Conditions
- Adductor Spasmodic Dysphonia, Voice Disorders, Spasmodic Dysphonia
- Interventions
- DaxibotulinumtoxinA
- Drug
- Lead sponsor
- University of California, San Francisco
- Other
- Eligibility
- 18 Years and older
- Enrollment
- 22 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2023 – 2025
- U.S. locations
- 1
- States / cities
- San Francisco, California
- Conditions
- Laryngeal Dystonia
- Interventions
- Starstim system
- Device
- Lead sponsor
- Yale University
- Other
- Eligibility
- 18 Years to 65 Years
- Enrollment
- 10 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2025 – 2026
- U.S. locations
- 1
- States / cities
- New Haven, Connecticut
- Conditions
- Spasmodic Dysphonia, Laryngeal Dystonia
- Interventions
- 1Hz repetitive transcranial magnetic stimulation (rTMS)
- Device
- Lead sponsor
- University of Minnesota
- Other
- Eligibility
- 21 Years to 75 Years
- Enrollment
- 20 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2017 – 2018
- U.S. locations
- 1
- States / cities
- Minneapolis, Minnesota
- Conditions
- Laryngeal Dystonia, Spasmodic Dysphonia, Tremor
- Interventions
- Brain imaging, Laryngeal sensory block with topical bupivacaine
- Other · Drug
- Lead sponsor
- Massachusetts Eye and Ear Infirmary
- Other
- Eligibility
- 18 Years to 80 Years
- Enrollment
- 165 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2022 – 2027
- U.S. locations
- 1
- States / cities
- Boston, Massachusetts
- Conditions
- Laryngeal Dystonia, Adductor Spastic Dysphonia of Dystonia
- Interventions
- Deep Brain Stimulation
- Device
- Lead sponsor
- Indiana University
- Other
- Eligibility
- 18 Years to 70 Years
- Enrollment
- 12 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2022 – 2030
- U.S. locations
- 1
- States / cities
- Indianapolis, Indiana
- Conditions
- Spasmodic Dysphonia, Dystonia
- Interventions
- Vocal Exercise
- Behavioral
- Lead sponsor
- NYU Langone Health
- Other
- Eligibility
- 18 Years and older
- Enrollment
- 8 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2007 – 2013
- U.S. locations
- 1
- States / cities
- New York, New York
- Conditions
- Spasmodic Dysphonia, Laryngeal Dystonia, Voice Tremor
- Interventions
- sodium oxybate
- Drug
- Lead sponsor
- Kristina Simonyan
- Other
- Eligibility
- 21 Years to 80 Years
- Enrollment
- 8 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2026 – 2027
- U.S. locations
- 1
- States / cities
- Boston, Massachusetts
- Conditions
- Spasmodic Dysphonia, Focal Dystonia
- Interventions
- Not listed
- Lead sponsor
- National Institute of Neurological Disorders and Stroke (NINDS)
- NIH
- Eligibility
- 21 Years to 80 Years
- Enrollment
- 37 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2008 – 2016
- U.S. locations
- 1
- States / cities
- Bethesda, Maryland
- Conditions
- Voice Disorders
- Interventions
- Dextromethorphan, Lorazepam
- Drug
- Lead sponsor
- National Institute of Neurological Disorders and Stroke (NINDS)
- NIH
- Eligibility
- 18 Years to 80 Years
- Enrollment
- 65 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2003 – 2009
- U.S. locations
- 1
- States / cities
- Bethesda, Maryland
- Conditions
- Voice Disorders
- Interventions
- Not listed
- Lead sponsor
- National Institute of Neurological Disorders and Stroke (NINDS)
- NIH
- Eligibility
- 20 Years to 70 Years
- Enrollment
- 174 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- Started 2003
- U.S. locations
- 1
- States / cities
- Bethesda, Maryland
- Conditions
- Spasmodic Dysphonia, Voice Tremor
- Interventions
- Sodium Oxybate
- Drug
- Lead sponsor
- Kristina Simonyan
- Other
- Eligibility
- 21 Years to 80 Years
- Enrollment
- 117 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2018 – 2024
- U.S. locations
- 1
- States / cities
- Boston, Massachusetts
- Conditions
- Laryngeal Dystonia, Unaffected Relatives of Laryngeal Dystonia Patients, Voice Tremor, Muscle Tension Dysphonia
- Interventions
- MRI, Blood draw
- Other · Procedure
- Lead sponsor
- Kristina Simonyan
- Other
- Eligibility
- Not listed
- Enrollment
- 410 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2017 – 2028
- U.S. locations
- 1
- States / cities
- Boston, Massachusetts
- Conditions
- Spasmodic Dysphonia, Voice Tremor
- Interventions
- Sodium oxybate
- Drug
- Lead sponsor
- Kristina Simonyan
- Other
- Eligibility
- 21 Years to 80 Years
- Enrollment
- 53 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2012 – 2017
- U.S. locations
- 1
- States / cities
- New York, New York