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dc.contributor.advisorDai, Huanping
dc.contributor.authorMast, Whitney
dc.creatorMast, Whitney
dc.date.accessioned2018-06-18T23:57:39Z
dc.date.available2018-06-18T23:57:39Z
dc.date.issued2018
dc.identifier.urihttp://hdl.handle.net/10150/627986
dc.description.abstractMeasuring hearing thresholds is part of virtually all hearing evaluations. The standard clinical procedure for measuring hearing thresholds is easy to use, efficient, and its outcome is relatively reproducible (Levitt, 1971). However, the procedure has the downside that the task performance (proportion of ‘yes’ response, or PYes) targeted by the clinical thresholds is unspecified. Furthermore, it remains uncertain whether the procedure extracts information about threshold in an optimal way. The purpose of this paper is to address both issues. Clinical thresholds (THHW) were measured at 1 and 4 kHz for 22 normal-hearing adult listeners with 10 repetitions per listener at each frequency. For determining the target PYes for THHW, or PYesHW, psychometric functions, which relate PYesHW to signal level, were also measured. From the measured psychometric functions, both PYesHW and the threshold corresponding to PYes=0.5, or TH0.5 were derived. On average, PYesHW=0.93 and TH0.5=THHW- 3 dB. With minimal modifications to the current procedure, better estimates of thresholds were obtained either by fitting a psychometric function to the trials in the adaptive track, or by averaging the turning points (reversals) in the adaptive track. Therefore, the above simple modifications to the current clinical protocol could be utilized by clinicians for threshold estimation.en_US
dc.language.isoen_USen_US
dc.publisherThe University of Arizona.en_US
dc.rightsCopyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.en_US
dc.subjectAudiologyen_US
dc.subjectHearing thresholden_US
dc.subjectHughson-Westakeen_US
dc.subjectpsychoacousticsen_US
dc.subjectPsychometric functionen_US
dc.titleAn Analysis of the Current Clinical Procedure for Measuring Hearing Thresholds and Recommendations for Improving the Measurementen_US
dc.typetexten_US
dc.typeElectronic Dissertationen_US
thesis.degree.grantorUniversity of Arizonaen_US
thesis.degree.leveldoctoralen_US
dc.contributor.committeememberVelenovsky, David
dc.contributor.committeememberNorrix, Linda
dc.contributor.committeememberGriffin, Stephanie
thesis.degree.disciplineGraduate Collegeen_US
thesis.degree.disciplineSpeech, Language, & Hearing Sciencesen_US
thesis.degree.nameAu.D.en_US
refterms.dateFOA2018-06-18T23:57:40Z


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