Clinical trials: Spasmodic Dysphonia
Voice Disorders
Brain Mapping of Voice Control
Some voice disorders are caused by uncontrolled muscle actions that affect the larynx or voice box. The purpose of this study is to understand 1) how the brain controls voice production; 2) how changes in sensation within the…
- Trial name
- NCT00066911
- Where
- United States
- Volunteers
- 174 people, healthy volunteers welcome
- Sponsor
- National Institute of Neurological Disorders and Stroke (NINDS)
Laryngeal Dystonia, Spasmodic Dysphonia
Understanding Disorder-specific Neural Pathophysiology in Laryngeal Dystonia and Voice Tremor
The researchers will examine functional neural correlates that differentiate between laryngeal dystonia and voice tremor and contribute to disorder-specific pathophysiology using a cross-disciplinary approach of multimodal brain…
- Conditions
- Laryngeal Dystonia, Spasmodic Dysphonia, Tremor
- Trial name
- NCT05216770
- Testing
- Brain imaging, Laryngeal sensory block with topical bupivacaine
- Where
- United States
- Volunteers
- 165 people, healthy volunteers welcome
- Sponsor
- Massachusetts Eye and Ear Infirmary
Spasmodic Dysphonia, Voice Tremor
Sodium Oxybate in Spasmodic Dysphonia and Voice Tremor
Using a comprehensive approach of clinico-behavioral testing, neuroimaging and pharmacogenetics, the researchers will examine the clinical effects of sodium oxybate and the matched placebo on voice symptoms in spasmodic dysphonia…
- Trial name
- NCT03292458
- Testing
- Sodium Oxybate
- Where
- United States
- Volunteers
- 117 people
- Sponsor
- Kristina Simonyan
Spasmodic Dysphonia
Laryngeal Vibration for Spasmodic Dysphonia
The general aim of the research is to provide scientific evidence that vibro-tactile stimulation (VTS) represents a non-invasive form of neuromodulation that can induce measurable improvements in the speech of people with…
- Trial name
- SD-VTS (NCT03746509)
- Testing
- Laryngeal Vibration (Treatment), Laryngeal Vibration (Comparator)
- Where
- United States
- Volunteers
- 42 people, healthy volunteers welcome
- Sponsor
- University of Minnesota
Adductor Spasmodic Dysphonia
Effects of Vocal Exercises for Spasmodic Dysphonia
The purpose of this study is to assess the effect of voice exercise and voice rest on subject's perception of vocal handicap and communicative participation following Botox injections for adductor spasmodic dysphonia.
- Trial name
- NCT03349086
- Testing
- Voice Exercise
- Where
- United States
- Volunteers
- 15 people
- Sponsor
- University of Wisconsin, Madison
Laryngeal Dystonia, Spasmodic Dysphonia
Transcranial Magnetic Stimulation in Laryngeal Dystonia
This randomized clinical trial with a crossover design aims to investigate the effects of neuromodulation through repetitive transcranial magnetic stimulation (rTMS) applied to patients diagnosed with laryngeal dystonia.
- Trial name
- NCT07683767
- Testing
- Active rTMS, Speech-Language Therapy
- Volunteers
- 20 people
- Sponsor
- Universidade Federal de Pernambuco
Adductor Spasmodic Dysphonia
Treatment for Adductor Spasmodic Dysphonia by Type 2 Thyroplasty Using Titanium Bridges
For adductor spasmodic dysphonia, there is a need for establishing a new therapy under the present circumstance where no standard therapy has been established yet and existing therapies fail to provide permanent effect.
- Trial name
- NCT02528006
- Testing
- Type 2 Thyroplasty using Titanium Bridges
- Where
- 4 sites in Japan
- Volunteers
- 20 people
- Sponsor
- Kumamoto University
Laryngeal Dystonia
tDCS for Laryngeal Dystonia
This project will apply transcranial direct current stimulation (tDCS) to multiple brain areas to evaluate the effects as a potential treatment for laryngeal dystonia (formerly spasmodic dysphonia).
- Trial name
- NCT06830174
- Testing
- Starstim system
- Where
- United States
- Volunteers
- 10 people
- Sponsor
- Yale University
Laryngeal Dystonia, Adductor Spastic Dysphonia of Dystonia
Deep Brain Stimulation for Laryngeal Dystonia: From Mechanism to Optimal Application
Deep Brain Stimulation (DBS) is a neurosurgical procedure used to treat tremors, and dystonia. This study will enroll people who have a form of focal dystonia that affects their vocal cords called Adductor Laryngeal dystonia…
- Trial name
- NCT05506085
- Testing
- Deep Brain Stimulation
- Where
- United States
- Volunteers
- 12 people
- Sponsor
- Indiana University
Laryngeal Dystonia, Spasmodic Dysphonia
Cortical Silent Period in Laryngeal Dystonia
The goal of this observational study is to evaluate the cortical silent period (cSP) in cricothyroid muscle (CT) in laryngeal dystonia and control healthy subjects.
- Trial name
- cSPDystonia (NCT05580302)
- Testing
- Transcranial Magnetic Stimulation (TMS)
- Where
- Croatia
- Volunteers
- 20 people, healthy volunteers welcome
- Sponsor
- University of Split, School of Medicine
Adductor Spasmodic Dysphonia, Abductor Spastic Dysphonia
Laryngeal Vibro-tactile Stimulation as a Non-invasive Symptomatic Treatment for Spasmodic Dysphonia
The general aim of the research is to provide scientific evidence that vibro-tactile stimulation (VTS) represents a non-invasive form of neuromodulation that can induce measurable improvements in the speech of patients with…
- Conditions
- Adductor Spasmodic Dysphonia, Abductor Spastic Dysphonia, Laryngeal Dystonia
- Trial name
- NCT05467228
- Testing
- vibro-tactile stimulation (VTS)
- Where
- United States
- Sponsor
- University of Minnesota
Spasmodic Dysphonia
Spasmodic Dysphonia Pain
This study aims to identify adjuvant methods to improve patient comfort during in-office laryngology procedures.
- Trial name
- NCT04648891
- Testing
- Lidocaine, Vibrating wand
- Where
- United States
- Volunteers
- 32 people
- Sponsor
- Mayo Clinic
Laryngeal Dystonia, Focal Dystonia
Effects of Neuromodulation in Laryngeal Dystonia
Laryngeal dystonia (LD) causes excessive vocal fold abduction (opening) or adduction (closing) leading to decreased voice quality, job prospects, self-worth and quality of life.
- Trial name
- NCT05095740
- Testing
- repetitive transcranial magnetic stimulation (rTMS)
- Where
- United States
- Volunteers
- 25 people, healthy volunteers welcome
- Sponsor
- MGH Institute of Health Professions
Spasmodic Dysphonia
EMG-Guided Versus Endoscopic-Catheter Botulinum Toxin Injection for Spasmodic Dysphonia
This randomized, controlled non-inferiority trial will compare two established botulinum toxin injection techniques for adductor spasmodic dysphonia: percutaneous electromyography-guided injection and transnasal endoscopic…
- Trial name
- NCT07894172
- Testing
- Intervention A - Electromyography (EMG)-Guided BTX Injection, Intervention B - Endoscopic Catheter BTX Injection
- Volunteers
- 17 people
- Sponsor
- Chinese University of Hong Kong
Spasmodic Dysphonia, Voice Tremor
Voice Tremor in Spasmodic Dysphonia: Central Mechanisms and Treatment Response
The proposed research aims to determine brain abnormalities in patients with spasmodic dysphonia (SD) and voice tremor (VT) as the basis for characterization of central mechanisms underlying symptom improvement following the use…
- Trial name
- NCT01961297
- Testing
- Sodium oxybate
- Where
- United States
- Volunteers
- 53 people, healthy volunteers welcome
- Sponsor
- Kristina Simonyan
Spasmodic Dysphonia, Laryngeal Dystonia
Extended-release Sodium Oxybate (Lumryz) in Spasmodic Dysphonia and Voice Tremor
Using a comprehensive approach of clinico-behavioral testing and neuroimaging, the researchers will examine the clinical effects of the extended-release formulation of sodium oxybate on voice symptoms in spasmodic dysphonia in an…
- Conditions
- Spasmodic Dysphonia, Laryngeal Dystonia, Voice Tremor
- Trial name
- NCT07041203
- Testing
- sodium oxybate
- Where
- United States
- Volunteers
- 8 people
- Sponsor
- Kristina Simonyan
Vocal Weakness(Post-BOTOX Injection)
Firdapse for Post-BOTOX Vocal Weakness
Botox injections into the thyroarytenoid muscle are a predictable and effective treatment for SD, but typically result in transient symptoms of voice weakness and breathiness during the first 2-3 weeks after injection.
- Trial name
- NCT05123053
- Testing
- Amifampridine
- Where
- United States
- Volunteers
- 18 people
- Sponsor
- Augusta University
Dysphonia, Spastic, Dysphonia
Reversal of Botulinum Neurotoxin Injection Related Dysphonia With Pyridostigmine
The purpose of this study is to evaluate the effects of pyridostigmine (Mestinon) on patient vocal outcomes after undergoing laryngeal botulinum neurotoxin (BoNT) injections, which is a standard treatment for spasmodic dysphonia.
- Conditions
- Dysphonia, Spastic, Dysphonia, Laryngeal Dystonia
- Trial name
- NCT05110417
- Testing
- Pyridostigmine Bromide 60 Milligrams (mg)
- Where
- United States
- Volunteers
- 10 people
- Sponsor
- Eastern Virginia Medical School
Adductor Spasmodic Dysphonia
The 'Lombard Effect' in Patients Affected by Adductor Laryngeal Dystonia
Adductory spasmodic dysphonia (AdSD) is a rare condition characterised by irregular and uncontrolled voice interruptions, most commonly affecting women around the age of 45.
- Trial name
- LoQVAdSD (NCT06402214)
- Testing
- Lombard test
- Where
- Italy
- Volunteers
- 18 people, healthy volunteers welcome
- Sponsor
- Fondazione Policlinico Universitario Agostino Gemelli IRCCS
Laryngeal Dystonia, Spasmodic Dysphonia
Deep Brain Stimulation in Laryngeal Dystonia and Voice Tremor
The goals of this project are 1) to determine the incidence of neurological voice disorders in patients with dystonia and essential tremor undergoing deep brain stimulation (DBS), 2) investigate the neuroimaging and intracranial…
- Conditions
- Laryngeal Dystonia, Spasmodic Dysphonia, Tremor, Dystonia
- Trial name
- NCT05150093
- Testing
- Deep Brain Stimulation
- Where
- United States
- Volunteers
- 120 people
- Sponsor
- Massachusetts Eye and Ear Infirmary