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• W2062404866 abstract "Vowels provide the acoustic foundation of communication through speech and song, but little is known about how the brain orchestrates their production. Positron emission tomography was used to study regional cerebral blood flow (rCBF) during sustained production of the vowel /a/. Acoustic and blood flow data from 13, normal, right-handed, native speakers of American English were analyzed to identify CBF patterns that predicted the stability of the first and second formants of this vowel. Formants are bands of resonance frequencies that provide vowel identity and contribute to voice quality. The results indicated that formant stability was directly associated with blood flow increases and decreases in both left- and right-sided brain regions. Secondary brain regions (those associated with the regions predicting formant stability) were more likely to have an indirect negative relationship with first formant variability, but an indirect positive relationship with second formant variability. These results are not definitive maps of vowel production, but they do suggest that the level of motor control necessary to produce stable vowels is reflected in the complexity of an underlying neural system. These results also extend a systems approach to functional image analysis, previously applied to normal and ataxic speech rate that is solely based on identifying patterns of brain activity associated with specific performance measures. Understanding the complex relationships between multiple brain regions and the acoustic characteristics of vocal stability may provide insight into the pathophysiology of the dysarthrias, vocal disorders, and other speech changes in neurological and psychiatric disorders." @default.
• W2062404866 created "2016-06-24" @default.
• W2062404866 creator A5026215003 @default.
• W2062404866 date "2015-03-01" @default.
• W2062404866 modified "2023-09-25" @default.
• W2062404866 title "Functional Connectivity Associated with Acoustic Stability During Vowel Production: Implications for Vocal-Motor Control" @default.
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• W2062404866 doi "https://doi.org/10.1089/brain.2014.0257" @default.
• W2062404866 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/4361170" @default.
• W2062404866 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/25295385" @default.
• W2062404866 hasPublicationYear "2015" @default.
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