EFFECT OF PROBE TIP SIZE ON TR

EFFECT OF PROBE TIP SIZE ON TR
ISBN-10
1374730289
ISBN-13
9781374730281
Category
Medical
Pages
48
Language
English
Published
2017-01-27
Publisher
Open Dissertation Press
Authors
Yin-Chau Mui, 苗燕洲

Description

This dissertation, "Effect of Probe Tip Size on Transient Otoacoustic Emissions" by Yin-chau, Mui, 苗燕洲, was obtained from The University of Hong Kong (Pokfulam, Hong Kong) and is being sold pursuant to Creative Commons: Attribution 3.0 Hong Kong License. The content of this dissertation has not been altered in any way. We have altered the formatting in order to facilitate the ease of printing and reading of the dissertation. All rights not granted by the above license are retained by the author. Abstract: Abstract of dissertation entitled Effect of Probe Tip Size on Transient Otoacoustic Emissions submitted by MUI, Yin-Chau for the degree of Master of Science in Audiology at the University of Hong Kong in May 2004 The measurement of transient evoked otoacoustic emission (TEOAE), produced in the cochlea by a transient click and recorded in the external ear canal, depends on a number of factors. The first and most important one is the probe fit which is essential for maximizing the detection of the emissions and on the other hand, for minimizing the interference of ambient noise level. To achieve a good probe fit, an appropriate size of the probe tip has to be selected for each individual ear. The effect of a change of probe tip size on the TEOAEs was investigated in a group of 40 Chinese adults (mean age = 30.1, SD = 6.6) with normal hearing and middle ear functioning. Three different sizes of probe tip (optimal-size, one size bigger, one size smaller) were used to record TEOAEs from either ear of each subject. A mixed between-subjects repeated-measures model was used to evaluate the differences recorded by non-linear protocol paradigms from the three probe tip sizes across clinical variables of vii interest (overall correlation, overall signal-to-noise ratio, correlation and signal-to-noise ratio at 1 kHz and 4 kHz bands). The results showed that the means of overall correlation and signal-to-noise ratio, and those at 1 kHz and 4 kHz bands were significantly reduced with smaller-size probe tip. In view of the findings, formal order of probe tip selection and re-design of probe tips are suggested. viii DOI: 10.5353/th_b3047356 Subjects: Otoacoustic emissions Audiometry

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