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Spasmodic dysphonia (SD) is a rare disorder that causes involuntary movements of the voice box, says Saul Frankford, an assistant professor in the School of Behavioral and Brain Sciences at the ...
Kennedy has a condition called spasmodic dysphonia, a neurological disorder that impacts the muscles in the voice box, also known as the larynx, according to the National Institute on Deafness and ...
Spasmodic dysphonia, also known as laryngeal dystonia, is a disorder in which the muscles that generate a person's voice go into periods of spasm. [1] [2] This results in breaks or interruptions in the voice, often every few sentences, which can make a person difficult to understand. [1]
Abductor spasmodic dysphonia is another type of condition, which causes “sudden involuntary spasms that trigger the vocal cords to open,” per John Hopkins Medicine.
Causes distortions of the mouth and tongue. Spasmodic dysphonia/Laryngeal dystonia muscles of larynx: Causes the voice to sound broken, become hoarse, sometimes reducing it to a whisper. Focal hand dystonia (also known as musician's or writer's cramp). single muscle or small group of muscles in the hand
Voice disorders [1] are medical conditions involving abnormal pitch, loudness or quality of the sound produced by the larynx and thereby affecting speech production. These include:
Spasmodic dysphonia affects up to 50,000 people in North America, and is a subset of dystonia, a muscle contraction disorder that can affect many parts of the body. In one type of vocal dystonia ...
Propagule pressure plays an important role in species invasions (Groom, 2006). Charles Darwin was the first to study specific factors related to invasions of non-native species. In his research he identified that few members of the same genus were present in habitats containing naturalized non-indigenous species (Colautti et al., 2006).