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Effect of bone conduction transducer placement on distortion product otoacoustic emissions

Hazelbaker, Julie L.
http://rave.ohiolink.edu/etdc/view?acc_num=osu1092677782

Abstract Details

2004, Doctor of Philosophy, Ohio State University, Speech and Hearing Science.
The purpose of this study was to develop a technique to determine the magnitude of bone conducted sound in the cochlea when stimuli are delivered from three different locations on the head. Distortion product otoacoustic emissions (DPOAE) at 1000 and 2000 Hz were used as tools to determine cochlear response to stimuli introduced via air conduction and bone conduction in three subjects. The bone conduction transducer was moved to three head locations (ipsilateral mastoid, contralateral mastoid and forehead). The intensity of the emissions elicited was compared. The differences in DPOAE magnitude created by varying the location of the bone conduction transducer were compared with behavioral threshold differences with the same transducers at the same locations. It was assumed that results of behavioral measures would provide a prediction of the relationship between air and bone conducted DPOAE. However, in the current study, this was not the case. Behavioral bone conduction threshold data did not predict differences in DPOAE at different bone conduction transducer locations. This was a somewhat surprising result and should be considered further in future studies examining the properties of DPOAE elicited by bone conduction. Additionally, a wide band noise masker was introduced to the non-test ear when bone conducted stimuli were introduced to make DPOAE and behavioral test conditions as similar as possible. No great suppression effects were noted across subjects for either frequency. This was likely due to the shape and intensity of the contralateral masked used.
Lawrence Feth (Advisor)
114 p.
Health Sciences, Audiology
hearing; audiology; bone conduction; distortion product otoacoustic emissions

Recommended Citations

Citations

  • Hazelbaker, J. L. (2004). Effect of bone conduction transducer placement on distortion product otoacoustic emissions [Doctoral dissertation, Ohio State University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=osu1092677782

    APA Style (7th edition)

  • Hazelbaker, Julie. Effect of bone conduction transducer placement on distortion product otoacoustic emissions. 2004. Ohio State University, Doctoral dissertation. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=osu1092677782.

    MLA Style (8th edition)

  • Hazelbaker, Julie. "Effect of bone conduction transducer placement on distortion product otoacoustic emissions." Doctoral dissertation, Ohio State University, 2004. http://rave.ohiolink.edu/etdc/view?acc_num=osu1092677782

    Chicago Manual of Style (17th edition)

osu1092677782
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© 2004, all rights reserved.
This open access ETD is published by The Ohio State University and OhioLINK.