Improved vocal quality and decreased vocal effort after botulinum toxin treatment for laryngeal dystonia

Leung, Jai-Sen; Rosenbaum, Andrés; Holmberg, Jorge; Villarroel, Pablo Vera; Napolitano, Carla; Badia, Priscila; Lagos, Antonia

doi:10.1016/j.anl.2023.06.004

Cited by 1 publication

(1 citation statement)

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“…They also belong to the extrinsic laryngeal muscles with others, since they are located around the larynx. Vocalization and deglutition involve intricate coordination of multiple muscles within the larynx including infrahyoid and other intrinsic muscles of larynx, each playing a crucial role in achieving precise movements (Leung et al, 2023). Understanding the individual actions of these muscles is vital for comprehending their combined impact.…”

Section: Introductionmentioning

confidence: 99%

The Thyrohyoid Muscle: A Crucial Player in Deglutition and Vocalization

Cho,

Han,

et al. 2024

Int. J. Morphol.

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The thyrohyoid muscle is one of the four infrahyoid muscles. Its role in vocalization and deglutition could be often overlooked, despite its crucial participation in these processes. Unlike other infrahyoid muscles, the thyrohyoid muscle receives innervation from the first cervical spinal nerves which contributes to its unique function. Its primary action involves hyolaryngeal elevation during swallowing, contributing to the opening of the upper esophageal sphincter. In conjunction with other muscles, it also protects the airway and facilitates the passage of food into the esophagus. Variations in the muscle's thickness may exist, and its function can be influenced by chewing habits. Weakened muscles involved in swallowing are often associated with dysphagia, a common complication in stroke and brain-injured patients. Advanced imaging techniques and sleep studies have provided insights into the dynamics and frequency of swallowing. This review explores the anatomic structures, function in action, diagnosis and clinical implications of this muscle. Overall, understanding the significance of the thyrohyoid muscle enhances our comprehension of the intricate interplay of laryngeal muscles during vocalization and deglutition.

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Section: Introductionmentioning

confidence: 99%