Adaptive recalibration of the auditory system induced by low-level sound stimulation and sound deprivation

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Title

Adaptive recalibration of the auditory system induced by low-level sound stimulation and sound deprivation

Identifier

TF2009Cernik

Subjects

["Auditory perception","Audiology"]

Type

["Text"]

Genre

["Theses"]

Format

["pdf"]

Rights

This thesis or dissertation is restricted from access because there is no internet release form on file. If you are the author and you would like to submit an internet release form allowing us to publish your thesis or dissertation online, please contact spcoll@towson.edu. Copyright protected, all rights reserved.

General Notes

Thesis approval page signed by thesis committee members and the Dean of the College of Graduate Studies and Research included in print copy of thesis.<br><br>Doctoral thesis research directed by Department of Audiology, Speech-Language Pathology, and Deaf Studies.

Extent

xi, 86 pages

Language

["English"]

Repository

["Towson University. Albert S. Cook Library. Special Collections and University Archives"]

Collection Name

["Towson University Graduate Theses and Dissertations"]

Author

Cernik, Rory D.

Degree Date

2009

Department or Program

["Towson University. Department of Audiology, Speech-Language Pathology and Deaf Studies"]

Abstract

The purpose of this study was to identify adaptive changes in the auditory system through chronic enhancement and deprivation of the auditory background. It was hypothesized that sound deprivation will elicit a compensatory response enhancing the auditory system’s sensitivity whereas sound enhancement will elicit a compensatory response diminishing auditory sensitivity. To evaluate these predictions, 16 normal hearing participants were assigned to continuous, prolonged auditory background modifications. The auditory system, both before and after sound modification, was evaluated by: (1) pure-tone thresholds, (2) 2F1-F2 DPOAE (65/55 dB SPL), and (3) DPOAE input/output (I/O) function for 1000, 2000, 4000, and 8000 Hz with L1 primary levels from 30 to 65 dB SPL. Audibility threshold results were consistent with the aforementioned hypothesis. Interestingly, treatment-related statistically significant changes were observed in DPOAE I/O measurement, indicating that the tonic amplification of the outer hair cell may be involved in the short-term, adaptive auditory recalibration.

Thesis Committee Members

["Pallett, Stephen","Kreisman, Brian M."]

Date Published

06 April 2013

Author (Controlled)

["Cernik, Rory D."]

Thesis Advisor

["Jastreboff, Margaret M."]

Degree Note

(Au. D.) -- Towson University, 2009.

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