Modeling tongue surface contours from Cine-MRI images.
This study demonstrated that a simple mechanical model of global tongue movement in parallel sagittal planes could be used to quantify tongue motion during speech. The goal was to represent simply the differences in 2D tongue surface shapes and positions during speech movements and in subphonemic sp...
| Publicado en: | Journal of Speech, Language & Hearing Research Vol. 44; no. 5; pp. 1026 - 1041 |
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| Autores principales: | , , |
| Formato: | Artículo |
| Publicado: |
American Speech-Language-Hearing Association
October 2001
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| Materias: | |
| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ssf&AN=507713073&site=ehost-live header: @attributes: shortDbName: ssf uiTerm: 507713073 longDbName: Social Sciences Full Text (H.W. Wilson) uiTag: AN controlInfo: bkinfo: jinfo: jid: 10924388 1SM jtl: Journal of Speech, Language & Hearing Research issn: 10924388 maglogo: N pubinfo: dt: October 2001 vid: 44 iid: 5 pid: 42 pub: American Speech-Language-Hearing Association artinfo: ui: 507713073 10.1044/1092-4388(2001/081) ppf: 1026 ppct: 15 formats: fmt: – @attributes: type: T – @attributes: type: P size: 1.3MB tig: atl: Modeling tongue surface contours from Cine-MRI images. aug: au: Stone, Maureen Davis, Edward P. Douglas, Andrew S. su: Physiological aspects of speech Tongue Magnetic resonance imaging sug: subj: Physiological aspects of speech Tongue Magnetic resonance imaging ab: This study demonstrated that a simple mechanical model of global tongue movement in parallel sagittal planes could be used to quantify tongue motion during speech. The goal was to represent simply the differences in 2D tongue surface shapes and positions during speech movements and in subphonemic speech events such as coarticulation and left-to-right asymmetries. The study used tagged Magnetic Resonance Images to capture motion of the tongue during speech. Measurements were made in three sagittal planes (left, midline, right) during movement from consonants (/k/, /s/) to vowels (/i/, /Đ/, /u/). MR image-sequences were collected during the C-to-V movement. The image-sequence had seven time-phases (frames), each 56 ms in duration. A global model was used to represent the surface motion. The motions were decomposed into translation, rotation, homogeneous stretch, and in-plane shear. The largest C-to-V shape deformation was from /k/ to /Đ/. It was composed primarily of vertical compression, horizontal expansion, and downward translation. Coarticulatory effects included a trade-off in which tongue shape accommodation was used to reduce the distance traveled between the C and V. Left-to-right motion asymmetries may have increased rate of motion by reducing the amount of mass to be moved. Reprinted by permission of the publisher. pubtype: Academic Journal doctype: Article src: R language: English refInfo: copyright: @attributes: flag: N holdings: @attributes: islocal: N |
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