| The use of confusion patterns to evaluate the neural basis for concurrent vowel identification. | |
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MedLine Citation:
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PMID: 20331041 Owner: NLM Status: In-Data-Review |
Abstract/OtherAbstract:
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Perceptual studies of concurrent vowel identification suggest that listeners with normal hearing (NH) are better able to use differences in fundamental frequency (F0) than listeners with sensorineural hearing loss (SNHL). However, the neural basis for this difference remains unknown. The present study sought to validate a neural model of concurrent vowel identification based on specific confusion patterns made by NH listeners. A standard set of five vowels was used. In each concurrent vowel pair, vowel 1 had F0 = 100 Hz, while the F0 of vowel 2 was varied between 100-126 Hz (4 semitones). NH listeners made similar confusions across all F0 differences, with a reduction in occurrence as F0 difference increased. F0 benefit varied significantly across concurrent vowel pairs. A phenomenological auditory-nerve model was cascaded with F0 segregation algorithms to predict the perceptual observations. Neural predictions showed similar confusion patterns to the perceptual data for many (but not all) concurrent vowel pairs. Validating a NH physiological model with specific confusion patterns will allow the model to be used to predict effects of specific physiological changes related to SNHL, which may be useful for improving cochlear-implant and hearing-aid signal processing strategies. [Work supported by Purdue University.]. |
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Authors:
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Ananthakrishna Chintanpalli; Michael G Heinz |
Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: The Journal of the Acoustical Society of America Volume: 127 ISSN: 1520-8524 ISO Abbreviation: J. Acoust. Soc. Am. Publication Date: 2010 Mar |
Date Detail:
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Created Date: 2010-03-24 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 7503051 Medline TA: J Acoust Soc Am Country: United States |
Other Details:
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Languages: eng Pagination: 1991 Citation Subset: IM |
Affiliation:
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Weldon School of Biomedical Eng., Purdue Univ., 206 S. Martin Jischke Dr., West Lafayette, IN 47907Purdue Univ., West Lafayette, IN 47907. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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