| Toward dynamic magnetic resonance imaging of the vocal tract during speech production. | |
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MedLine Citation:
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PMID: 20471801 Owner: NLM Status: In-Data-Review |
Abstract/OtherAbstract:
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OBJECTIVES/HYPOTHESIS: The most recent and significant magnetic resonance imaging (MRI) improvements allow for the visualization of the vocal tract during speech production, which has been revealed to be a powerful tool in dynamic speech research. However, a synchronization technique with enhanced temporal resolution is still required. STUDY DESIGN AND METHODS: The study design was transversal in nature. Throughout this work, a technique for the dynamic study of the vocal tract with MRI by using the heart's signal to synchronize and trigger the imaging-acquisition process is presented and described. The technique in question is then used in the measurement of four speech articulatory parameters to assess three different syllables (articulatory gestures) of European Portuguese Language. RESULTS: The acquired MR images are automatically reconstructed so as to result in a variable sequence of images (slices) of different vocal tract shapes in articulatory positions associated with Portuguese speech sounds. CONCLUSIONS: The knowledge obtained as a result of the proposed technique represents a direct contribution to the improvement of speech synthesis algorithms, thereby allowing for novel perceptions in coarticulation studies, in addition to providing further efficient clinical guidelines in the pursuit of more proficient speech rehabilitation processes. |
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Authors:
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Sandra M Rua Ventura; Diamantino Rui S Freitas; João Manuel R S Tavares |
Publication Detail:
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Type: Journal Article Date: 2010-05-15 |
Journal Detail:
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Title: Journal of voice : official journal of the Voice Foundation Volume: 25 ISSN: 1557-8658 ISO Abbreviation: J Voice Publication Date: 2011 Jul |
Date Detail:
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Created Date: 2011-06-27 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 8712262 Medline TA: J Voice Country: United States |
Other Details:
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Languages: eng Pagination: 511-8 Citation Subset: IM |
Copyright Information:
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Copyright © 2011 The Voice Foundation. Published by Mosby, Inc. All rights reserved. |
Affiliation:
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Radiology Department, School of Allied Health Science-IPP, Porto, Portugal. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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