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
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
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
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, 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
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
Spasmodic Dysphonia, Laryngeal Dystonia
rTMS in Spasmodic Dysphonia
Focal dystonia is a neurological movement disorder characterized by excessive involuntary muscle contractions of any body part. Spasmodic dysphonia (SD) is a type of focal dystonia characterized by excessive contraction of…
- Trial name
- NCT02957942
- Testing
- 1Hz repetitive transcranial magnetic stimulation (rTMS)
- Where
- United States
- Volunteers
- 20 people, healthy volunteers welcome
- Sponsor
- University of Minnesota
Spastic Dysphonia, Healthy
Study of Air Stream in Voice Production
This study will investigate and compare the air stream during voice production in patients with abductor spasmodic dysphonia and in normal volunteers.
- Trial name
- NCT00015795
- Testing
- airway interruption test
- Where
- United States
- Volunteers
- 30 people, healthy volunteers welcome
- Sponsor
- National Institute of Neurological Disorders and Stroke (NINDS)
Spasmodic Dysphonia
Zinc Supplementation Prior to Botox Injections for Spasmodic Dysphonia
One initial study has shown that Botulinum Toxin (BT) in combination with zinc supplementation may increase the duration of effects BT treatment. This initial study was in the context of facial aesthetics.
- Trial name
- NCT05892770
- Testing
- Zinc gluconate supplement, Botulinum toxin type A
- Where
- United States
- Volunteers
- 32 people, healthy volunteers welcome
- Sponsor
- University of Florida
Communication Disorder, Healthy
Central Mechanisms in Speech Motor Control Studied With H215O PET
Positron Emission Tomography (PET) is a technique used to investigate the functional activity of the brain. The PET technique allows doctors to study the normal biochemical and metabolic processes of the central nervous system of…
- Conditions
- Communication Disorder, Healthy, Stuttering, Tourette Syndrome
- Trial name
- NCT00001308
- Where
- United States
- Volunteers
- 1,163 people, healthy volunteers welcome
- Sponsor
- National Institute on Deafness and Other Communication Disorders (NIDCD)
Laryngeal Dystonia, Spasmodic Dysphonia
Characterization of Clinical Phenotypes of Laryngeal Dystonia and Voice Tremor
The researchers will systematically evaluate current and novel clinical voice assessment tools and measures to elucidate distinct clinical phenotypes of those with laryngeal dystonia and voice tremor.
- Conditions
- Laryngeal Dystonia, Spasmodic Dysphonia, Tremor
- Trial name
- NCT05150106
- Testing
- Clinical assessments of laryngeal function
- Where
- United States
- Volunteers
- 165 people, healthy volunteers welcome
- Sponsor
- Massachusetts Eye and Ear Infirmary
Spasmodic Dysphonia, Dystonia
Effect of Vocal Exercise After Botulinum Toxin Injection for Spasmodic Dysphonia
Studies have suggested that voluntary muscle exercise in the hand and face after botulinum toxin injection may enhance the clinical effects of the toxin.
- Trial name
- NCT00895063
- Testing
- Vocal Exercise
- Where
- United States
- Volunteers
- 8 people, healthy volunteers welcome
- Sponsor
- NYU Langone Health
Laryngeal Dystonia
Brain-Computer Interfaces in Laryngeal Dystonia
The researchers will develop and evaluate the use of adaptive closed-loop brain-computer interface therapeutic intervention in laryngeal dystonia.
- Trial name
- NCT04421365
- Testing
- neurofeedback brain-computer interface (BCI)
- Where
- United States
- Volunteers
- 40 people, healthy volunteers welcome
- Sponsor
- Kristina Simonyan
Laryngeal Disease, Spastic Dysphonia
Characteristics of Idiopathic Familial Voice Disorders
The purpose the study is to determine the genetic causes of specific voice disorders that run in families. Researchers are particularly interested in two conditions; 1. Spasmodic dysphonia 2.
- Conditions
- Laryngeal Disease, Spastic Dysphonia, Voice Disorder
- Trial name
- NCT00001552
- Where
- 4 sites in United States, United Kingdom
- Volunteers
- 270 people, healthy volunteers welcome
- Sponsor
- National Institute of Neurological Disorders and Stroke (NINDS)
Spasmodic Dysphonia, Singer's Dystonia
Brain Networks in Dystonia
To date, there is only limited knowledge about the distinct neural abnormalities that lead to the development of different forms of focal dystonia.
- Conditions
- Spasmodic Dysphonia, Singer's Dystonia, Writer's Cramp, Musician's Focal Hand Dystonia
- Trial name
- NCT03042962
- Testing
- MRI, Blood draw
- Where
- United States
- Volunteers
- 141 people, healthy volunteers welcome
- Sponsor
- Massachusetts Eye and Ear Infirmary
Laryngeal Dystonia
Brain Network Changes After Vibro-tactile Stimulation in Laryngeal Dystonia
Laryngeal dystonia (LD) is a focal dystonia affecting laryngeal muscles, causing involuntary spasms that impair speech production.
- Trial name
- Neuro-VTS-LD (NCT07443891)
- Testing
- Vibrotactile Stimulation (VTS)
- Where
- United States
- Volunteers
- 20 people, healthy volunteers welcome
- Sponsor
- University of Minnesota