Representations of Spectral Differences between Vowels in Tonotopic Regions of Auditory Cortex

Autor/in	Fisher, Julia
Titel	Representations of Spectral Differences between Vowels in Tonotopic Regions of Auditory Cortex
Quelle	(2017), (159 Seiten) PDF als Volltext Verfügbarkeit Ph.D. Dissertation, The University of Arizona
Sprache	englisch
Dokumenttyp	gedruckt; online; Monographie
ISBN	978-1-3697-4298-5
Schlagwörter	Hochschulschrift; Dissertation; Language Processing; Vowels; Statistical Analysis; Brain Hemisphere Functions; Acoustics; Phonemes; Neurolinguistics; Auditory Perception; Correlation; Auditory Discrimination; Diagnostic Tests + Suchen Sie Ihr Suchwort? Thesis; Dissertations; Academic thesis; Sprachverarbeitung; Statistische Analyse; Akustik; Fonem; Neurolinguistisches Programmieren; Auditive Wahrnehmung; Akustische Wahrnehmung; Korrelation; Diagnostic test; Diagnostischer Test
Abstract	This work examines the link between low-level cortical acoustic processing and higher-level cortical phonemic processing. Specifically, using functional magnetic resonance imaging, it looks at 1) whether or not the vowels [alpha] and [i] are distinguishable in regions of interest defined by the first two resonant frequencies (formants) of those vowels and 2) whether or not that neural discrimination ability changes based on anatomical region. The formant-frequency based regions of interest are found to respond differentially to [alpha] and [i] with the response to [alpha] statistically significantly greater than the response to [i] in the averaged [alpha] formant-frequency based region. Unexpectedly, the response to [i] is numerically but not statistically significantly greater than the response to [alpha] in the averaged [i] formant-frequency based region. Additionally, there is not a significant interaction of this pattern with anatomical region, although early cortical auditory regions appear to show the pattern while later ones do not. Further investigation into the results leads to the hypotheses that they could be due to task-specific neural processing strategies and that the link between lower and higher-level cortical auditory processing is more complex than originally hypothesized. [The dissertation citations contained here are published with the permission of ProQuest LLC. Further reproduction is prohibited without permission. Copies of dissertations may be obtained by Telephone (800) 1-800-521-0600. Web page: http://www.proquest.com/en-US/products/dissertations/individuals.shtml.] (As Provided).
Anmerkungen	ProQuest LLC. 789 East Eisenhower Parkway, P.O. Box 1346, Ann Arbor, MI 48106. Tel: 800-521-0600; Web site: http://www.proquest.com/en-US/products/dissertations/individuals.shtml
Erfasst von	ERIC (Education Resources Information Center), Washington, DC
Update	2020/1/01