Muscular and neuronal control of voice production – forgotten findings, current concepts, and new developments

Tracicaru, Rareş-Vasile; Bräuer, Lars; Döllinger, Michael; Hînganu, Delia; Paulsen, Friedrich; Hînganu, Marius Valeriu

doi:10.1016/j.aanat.2024.152283

Annals of Anatomy - Anatomischer Anzeiger

2024

DOI: 10.1016/j.aanat.2024.152283

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Muscular and neuronal control of voice production – forgotten findings, current concepts, and new developments

Rareş-Vasile Tracicaru,

Lars Bräuer,

Michael Döllinger

et al.

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2024

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Morphological Evidence for a Unique Neuromuscular Functional Unit of the Human Vocalis Muscle

Tracicaru,

Bräuer,

Döllinger

et al. 2024

IJMS

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Human vocalization is a complex process that is still only partially understood. Previous studies have suggested the possibility of a localized neuromuscular network of the larynx. Here we investigate this structure in human dissection specimens using multiple immunofluorescence and transmission electron microscopy (TEM). In the area of the pars interna of the thyroarytenoid muscle, muscle fibers are present that are clearly differentiated from skeletal or cardiac muscle cells and show an intermediate ultrastructure. In addition, intramuscular neurons are present that are detectable by both electron and fluorescence microscopy and may have a sensory function in a local neuronal network. Also, several types of sensory and motor synapses are detectable and distributed throughout the pars interna of the thyroarytenoid muscle, with multisynaptic muscle fibers being a common feature. These findings suggest the existence of a previously unrecognized type of muscle fiber coupled to an intramuscular neuronal network, the presence of which could explain functional peculiarities at the laryngeal level.

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Morphological Evidence for a Unique Neuromuscular Functional Unit of the Human Vocalis Muscle

Tracicaru,

Bräuer,

Döllinger

et al. 2024

IJMS

View full text Add to dashboard Cite

show abstract

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Muscular and neuronal control of voice production – forgotten findings, current concepts, and new developments

Cited by 1 publication

References 53 publications

Morphological Evidence for a Unique Neuromuscular Functional Unit of the Human Vocalis Muscle

Morphological Evidence for a Unique Neuromuscular Functional Unit of the Human Vocalis Muscle

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