SPASMODIC DYSPHONIA

This study uses botulinum toxin (Botox) injections to treat movement disorders such as dystonia, tremor, and spasticity. Up to 2,000 participants aged 2 and older will receive tailored injections, with doctors trained in proper techniques. The goal is to manage symptoms and build…

This study uses brain scans and genetic tests to explore why different forms of focal dystonia develop. Researchers will compare brain activity and structure in people with dystonia, their unaffected relatives, and healthy volunteers. The goal is to identify unique brain markers …

This study looks at how deep brain stimulation (DBS) — a treatment already used for movement disorders — affects voice and speech in people with laryngeal dystonia or voice tremor. Researchers will record brain signals during surgery and measure voice changes afterward. The goal …

Researchers at Massachusetts Eye and Ear are studying 165 people with laryngeal dystonia or voice tremor, along with healthy volunteers, to better understand these voice disorders. Participants will undergo voice recordings, breathing tests, and imaging to identify distinct featu…

This study uses brain scans (fMRI, MEG, EEG) and a numbing throat spray to understand what goes wrong in the brains of people with laryngeal dystonia or voice tremor. Researchers will compare brain activity between these groups and healthy volunteers. The goal is to find unique b…