| High-resolution audiometry: an automated method for hearing threshold acquisition with quality control. | |
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MedLine Citation:
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PMID: 22284839 Owner: NLM Status: In-Data-Review |
Abstract/OtherAbstract:
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Background: In clinical practice, hearing thresholds are measured at only five to six frequencies at octave intervals. Thus, the audiometric configuration cannot closely reflect the actual status of the auditory structures. In addition, differential diagnosis requires quantitative comparison of behavioral thresholds with physiological measures, such as otoacoustic emissions (OAEs) that are usually measured in higher resolution. Purpose: The purpose of this research was to develop a method to improve the frequency resolution of the audiogram. Research Design: A repeated-measure design was used in the study to evaluate the reliability of the threshold measurements. Study Sample: A total of 16 participants with clinically normal hearing and mild hearing loss were recruited from a population of university students. Intervention: No intervention was involved in the study. Data Collection and Analysis: Custom developed system and software were used for threshold acquisition with quality control (QC). With real-ear calibration and monitoring of test signals, the system provided accurate and individualized measure of hearing thresholds that were determined by an analysis based on signal detection theory (SDT). The reliability of the threshold measure was assessed by correlation and differences between the repeated measures. Results: The audiometric configurations were diverse and unique to each individual ear. The accuracy, within-subject reliability, and between-test repeatability are relatively high. Conclusions: With QC, the high-resolution audiograms can be reliably and accurately measured. Hearing thresholds measured as ear canal sound pressures with higher frequency resolution can provide more customized hearing-aid fitting. The test system may be integrated with other physiological measures, such as OAEs, into a comprehensive evaluative tool. |
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Authors:
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Lin Bian |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Journal of the American Academy of Audiology Volume: 23 ISSN: 1050-0545 ISO Abbreviation: J Am Acad Audiol Publication Date: 2012 Jan |
Date Detail:
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Created Date: 2012-01-30 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 9114646 Medline TA: J Am Acad Audiol Country: Canada |
Other Details:
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Languages: eng Pagination: 36-45 Citation Subset: IM |
Copyright Information:
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American Academy of Audiology. |
Affiliation:
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Department of Speech and Hearing Science, Arizona State University. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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