A Neuroimaging Study of Premotor Lateralization and Cerebellar Involvement in the Production of Phonemes and Syllables.
Purpose: This study investigated the network of brain regions involved in overt production of vowels, monosyllables, and bisyllables to test hypotheses derived from the Directions Into Velocities of Articulators (DIVA) model of speech production (Guenther, Ghosh, & Tourville, 2006). The DIVA model p...
| Publicado en: | Journal of Speech, Language & Hearing Research Vol. 51; no. 5; pp. 1183 - 1203 |
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| Autores principales: | , , |
| Formato: | Artículo |
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American Speech-Language-Hearing Association
October 2008
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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=508005132&site=ehost-live header: @attributes: shortDbName: ssf uiTerm: 508005132 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 2008 vid: 51 iid: 5 pid: 42 pub: American Speech-Language-Hearing Association artinfo: ui: 508005132 10.1044/1092-4388(2008/07-0119) ppf: 1183 ppct: 20 formats: fmt: – @attributes: type: T – @attributes: type: P size: 561KB tig: atl: A Neuroimaging Study of Premotor Lateralization and Cerebellar Involvement in the Production of Phonemes and Syllables. aug: au: Ghosh, Satrajit S. Tourville, Jason A. Guenther, Frank H. su: Brain function localization Sound Speech Cerebellum Cerebral cortex sug: subj: Brain function localization Sound Speech Cerebellum Cerebral cortex ab: Purpose: This study investigated the network of brain regions involved in overt production of vowels, monosyllables, and bisyllables to test hypotheses derived from the Directions Into Velocities of Articulators (DIVA) model of speech production (Guenther, Ghosh, & Tourville, 2006). The DIVA model predicts left lateralized activity in inferior frontal cortex when producing a single syllable or phoneme and increased cerebellar activity for consonant-vowel syllables compared with steady-state vowels. Method: Sparse sampling functional magnetic resonance imaging (fMRI) was used to collect data from 10 right-handed speakers of American English while producing isolated monosyllables (e.g., “ba,” “oo”). Data were analyzed using both voxel-based and participant-specific anatomical region-of-interest-based techniques. Results: Overt production of single monosyllables activated a network of brain regions, including left ventral premotor cortex, left posterior inferior frontal gyrus, bilateral supplementary motor area, sensorimotor cortex, auditory cortex, thalamus, and cerebellum. Paravermal cerebellum showed greater activity for consonant-vowel syllables compared to vowels. Conclusions: The finding of left-lateralized premotor cortex activity supports the DIVA model prediction that this area contains cell populations representing syllable motor programs without regard for semantic content. Furthermore, the superior paravermal cerebellum is more active for consonants-vowel syllables compared with vowels, perhaps due to increased timing constraints for consonant production. 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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