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Measurement of Cricothyroid Articulation Using High-Resolution MRI and 3D Pattern Matching

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The action of the cricothyoid joint for F0 control were investigated based on MRI of high spatial resolution and 3D image analysis. The data from a male speaker's sustained vowels at two fundamental frequencies (110 Hz and 165 Hz) were analyzed with a 3D pattern matching method to obtain displacements and angular changes of the thyroid and cricoid cartilages. Results show that the two cartilages rotate and translate relative to each other three-dimensionally, suggesting the nature of the cricothyroid joint actions of multiple degrees of freedom. The major components of joint rotation and translation are observed in the midsagittal plane: between the two levels of F0, the joint rotates 7.0 degrees, and it translates 1.2 mm horizontally and 0.6 mm vertically. The effect of these joint actions are discussed in relation to changes in vocal fold length.
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Document Type: Research Article

Publication date: 2006-09-01

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  • Acta Acustica united with Acustica, published together with the European Acoustics Association (EAA), is an international, peer-reviewed journal on acoustics. It publishes original articles on all subjects in the field of acoustics, such as general linear acoustics, nonlinear acoustics, macrosonics, flow acoustics, atmospheric sound, underwater sound, ultrasonics, physical acoustics, structural acoustics, noise control, active control, environmental noise, building acoustics, room acoustics, acoustic materials, acoustic signal processing, computational and numerical acoustics, hearing, audiology and psychoacoustics, speech, musical acoustics, electroacoustics, auditory quality of systems. It reports on original scientific research in acoustics and on engineering applications. The journal considers scientific papers, technical and applied papers, book reviews, short communications, doctoral thesis abstracts, etc. In irregular intervals also special issues and review articles are published.
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