Download or read book Predicting Auditory Thresholds of Sensorineural Hearing Loss Using Distortion Product Otoacoustic Emissions written by Kristen Lewis and published by . This book was released on 2000 with total page 78 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Distortion Product Otoacoustic Emission Components as a Potential Marker of Preclinical Noise Injury to the Cochleas written by Gavin Coad and published by . This book was released on 2013 with total page 252 pages. Available in PDF, EPUB and Kindle. Book excerpt: Background: Excessive noise exposure can lead to noise induced hearing loss (NIHL) and hearing conservation programmes are essential to prevent occupational hearing loss. These programmes rely on monitoring hearing using pure tone audiometry. However, audiometry is not very sensitive and only detects a permanent hearing loss after significant injury has occurred. Distortion product otoacoustic emissions (DPOAEs) are generated by cochlear non-linear physiological processes associated with the outer hairs cells that underpin detection of sound, thus DPOAEs have promise as a tool to detect and monitor cochlear hair cell damage in NIHL. The DPOAE has two components, one generated at the point of interaction between the primaries (generator), the second reflected from the characteristic place of the DPOAE frequency (reflected). Some of the variability in DPOAE is believed to result from the interaction of the components, termed the DPOAE fine structure, and extracting the components may reduce the variability and improve the sensitivity of the DPOAE to injury. This study investigated the feasibility and reliability of a new approach to separating the DPOAE components, and their relationship to hearing measures in people with and without exposure to noise. Methods: Logarithmically swept primaries with a least-squares-fit (LSF) analysis were used to separate the DPOAE components, and the approach was evaluated and optimised in normally hearing subjects. Two studies followed that investigated the components of the DPOAE and how they correlate with behavioural measures of hearing. Firstly, in subjects (n=16) with 'normal' hearing (20 dB HL), both behavioural measures of the auditory filter (notched-noise maskers) and threshold were compared to the components of the DPOAE. In the second study subjects (108 men) with a mixture of thresholds, noise exposure and age were recruited and then divided into two equal sized and age matched groups (noise exposed and non-noise exposed) based on a detailed history of self-reported noise exposure. The DPOAE components were compared to audiometric threshold and behavioural measures of compressive nonlinearity using Schroeder-phase masked thresholds. Results: Overall, psychoacoustic measures of auditory filter and cochlear non-linearity were influenced by audiometric threshold, and exhibited no relationship with DPOAE level in subjects with 'normal' hearing (
Download or read book PREDICTION OF HEARING THRESHOL written by Ngan-Kam Kammy Yeung and published by Open Dissertation Press. This book was released on 2017-01-27 with total page 42 pages. Available in PDF, EPUB and Kindle. Book excerpt: This dissertation, "Prediction of Hearing Thresholds: Comparison of Cortical Evoked Response Audiometry and Auditory Steady State Response Audiometry Techniques" by Ngan-kam, Kammy, Yeung, 楊銀金, 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 Prediction of Hearing Thresholds: Comparison of Cortical Evoked Response Audiometry and Auditory Steady State Response Audiometry Techniques Submitted by Yeung, Ngan Kam Kammy for the degree of Master of Science in Audiology at the University of Hong Kong in May 2004 The aim of the present study is to evaluate how well cortical evoked response audiometry (CERA) and auditory steady state response (ASSR) thresholds predict behavioral pure tone audiometric (PTA) thresholds at octave frequencies between 500 and 4000 Hz. 34 adult subjects aged 18 or above with normal hearing or sensorineural hearing loss ranging from mild to profound level were recruited. 63 ears met the test criteria for PTA, CERA and ASSR testing. In addition to overall analyses, these ears were divided into 3 groups (normal hearing, mild to moderately severe hearing loss, and severe to profound hearing loss) according to their average PTA thresholds for individual group analyses. CERA results measured using tone burst stimuli, and ASSR results measured using 100% amplitude modulated and 10% frequency modulated tone stimuli at a modulation frequency of 40 Hz were compared with reference to PTA thresholds. Overall correlations of CERA and ASSR thresholds with PTA thresholds were high, with viii Pearson r coefficients exceeding .97 and .95 respectively for each of the test frequency. Individual group correlations, however, were significant at all test frequencies only in the hearing impaired groups. CERA and ASSR thresholds differed significantly from PTA thresholds in the normal hearing group. In addition, overall and individual group mean discrepancies between CERA and PTA thresholds were in general less than those between ASSR and PTA thresholds. 78.2% of the test ears had CERA thresholds within 10 dB of PTA thresholds and 71.0% of test ears had ASSR thresholds within 15 dB of PTA thresholds, showing that CERA thresholds better predicted PTA thresholds than ASSR thresholds. Results of the present study confirmed findings from previous research that both ASSR and CERA testing were accurate in predicting PTA thresholds for adult subjects with sensorineural hearing loss, but not as accurate for those with normal hearing. A closer agreement was exhibited between CERA and PTA thresholds than between ASSR and PTA thresholds using the same subjects. ix DOI: 10.5353/th_b3049431 Subjects: Audiometry, Evoked response Auditory evoked response
Download or read book Otoacoustic Emissions written by Martin S. Robinette and published by Thieme. This book was released on 2011-01-01 with total page 468 pages. Available in PDF, EPUB and Kindle. Book excerpt: A new edition of a best-selling text with a CD-ROM by Dr. David Kemp The new edition of the best-selling Otoacoustic Emissions: Clinical Applications provides a thorough review of the complex physiology of the ear and clinical applications of the latest research on otoacoustic emissions. The book features new chapters on such important topics as middle ear function enhanced by reflectance measurements and the use of otoacoustic emissions as a preclinical measure of susceptibility to hearing loss. Accompanying the book is a CD-ROM developed by Dr. David Kemp, Ph.D., which contains animations, movies, and interviews. The CD-ROM serves as an indispensable aid to both teaching and reviewing key concepts. From physiological phenomena to diagnostic and clinical applications, this book is a complete reference on otoacoustic emissions that will provide graduates in audiology and residents in otolaryngology and otology with all the essential information needed for research and professional practice.
Download or read book Hearing Loss written by National Research Council and published by National Academies Press. This book was released on 2004-12-17 with total page 321 pages. Available in PDF, EPUB and Kindle. Book excerpt: Millions of Americans experience some degree of hearing loss. The Social Security Administration (SSA) operates programs that provide cash disability benefits to people with permanent impairments like hearing loss, if they can show that their impairments meet stringent SSA criteria and their earnings are below an SSA threshold. The National Research Council convened an expert committee at the request of the SSA to study the issues related to disability determination for people with hearing loss. This volume is the product of that study. Hearing Loss: Determining Eligibility for Social Security Benefits reviews current knowledge about hearing loss and its measurement and treatment, and provides an evaluation of the strengths and weaknesses of the current processes and criteria. It recommends changes to strengthen the disability determination process and ensure its reliability and fairness. The book addresses criteria for selection of pure tone and speech tests, guidelines for test administration, testing of hearing in noise, special issues related to testing children, and the difficulty of predicting work capacity from clinical hearing test results. It should be useful to audiologists, otolaryngologists, disability advocates, and others who are concerned with people who have hearing loss.
Download or read book Objective Prediction of Pure Tone Thresholds in Normal and Hearing impaired Ears with Distortion Product Otoacoustic Emissions and Artificial Neural Networks written by Rouviere De Waal and published by . This book was released on 2000 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Relations of Race and Gender to Distortion Product Otoacoustic Emissions written by Lara L. Gingerich and published by . This book was released on 1998 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Use of Artificial Neural Networks to Predict Pure Tone Thresholds in Normal and Hearing impaired Ears with Distortion Product Otoacoustic Emissions written by Rouviere De Waal and published by . This book was released on 1998 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Disorders of Peripheral and Central Auditory Processing written by Gastone G. Celesia and published by Elsevier Health Sciences. This book was released on 2013-12-12 with total page 491 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Clinical Experience in Using Acoustic Reflex Thresholds to Predict Sensorineural Hearing Loss written by Tad C. Farrand and published by . This book was released on 1986 with total page 238 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Auditory Steady State Response written by Rance, Gary and published by Plural Publishing. This book was released on 2008-02-01 with total page 353 pages. Available in PDF, EPUB and Kindle. Book excerpt: Written for auditory clinicians and researchers alike, this is the first monograph on this important area of auditory science that traces the international research effort from its origins in the 1970s to the present day. Comprising contributions from experts in a range of disciplines including auditory physiology, engineering, medicine and audiology, the book presents comprehensive and authoritative coverage of the generation and recording of the ASSR and the clinical applications of the response.
Download or read book Pseudohypacusis written by James E. Peck and published by Plural Publishing. This book was released on 2011-04-10 with total page 257 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Handbook of Otoacoustic Emissions written by James Wilbur Hall and published by Cengage Learning. This book was released on 2000 with total page 635 pages. Available in PDF, EPUB and Kindle. Book excerpt: An invaluable, "hands-on" practical guide to understanding the base for and applications of ABR. Describes clearly measurement techniques, instrumentation, stimulus parameters, recording parameters and subject variables that can affect the responses. Discusses clinical applications of the auditory brainstem response in neurological evaluation. Includes many case studies to highlight the principles and techniques covered in the manual. Discusses applications of the ABR in newborn hearing screening and intraoperative monitoring.TEXTBOOK
Download or read book Otoacoustic Emissions written by Sumitrajit Dhar and published by Plural Publishing. This book was released on 2018-03-01 with total page 313 pages. Available in PDF, EPUB and Kindle. Book excerpt: Otoacoustic Emissions: Principles, Procedures, and Protocols, Second Edition is a readable yet comprehensive source of information on otoacoustic emissions (OAEs). OAEs now play an important role in hearing screening and the clinical assessment of children and adults. The text begins with a succinct overview of OAEs and a historical description of their discovery and emergence as a clinical tool. Otoacoustic Emissions distills in 10 chapters the latest information on OAEs from basic research to clinical applications. The book is concise, but comprehensive, and covers the essentials of the subject from innovative and up-to-date perspectives. The second edition features updates across all chapters, including current research findings and changing perspectives on OAE taxonomy. Important information is highlighted with new and updated illustrations throughout the book. The material covered in the book is appropriate for intermediate and advanced students, and ideal for practicing audiologists. With a focus on practical information needed by the clinical audiologist and an eye to technological developments, authors Dhar and Hall provide an up-to-date, straightforward, and clinically focused source of information on OAEs.
Download or read book Diagnostic Audiology written by John T. Jacobson and published by Allyn & Bacon. This book was released on 1990 with total page 360 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Ion Channels in Health and Sickness written by Fatima Shad Kaneez and published by BoD – Books on Demand. This book was released on 2018-10-10 with total page 204 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ion channels are proteins that make pores in the membranes of excitable cells present both in the brain and the body. These cells are not only responsible for converting chemical and mechanical stimuli into the electrical signals but are also liable for monitoring vital functions. All our activities, from the blinking of our eyes to the beating of our heart and all our senses from smell to sight, touch, taste and hearing are regulated by the ion channels. This book will take us on an expedition describing the role of ion channels in congenital and acquired diseases and the challenges and limitations scientist are facing in the development of drugs targeting these membrane proteins.
Download or read book Pediatric Audiology written by Jane R. Madell and published by Thieme. This book was released on 2013-11-07 with total page 848 pages. Available in PDF, EPUB and Kindle. Book excerpt: Written by pioneering experts in the field, this updated and expanded edition of Pediatric Audiology focuses on the practical application of audiology principles and protocols that audiologists and graduate students need to master. It features new chapters on vestibular testing of children, bone anchored hearing aids, and interpretation of audiologic test results, as well as describing in detail the red flags that audiologists should know to identify and manage the barriers to a childs optimal auditory development. Key Features: Videos with closed captioning, available online on Thiemes MediaCenter, demonstrate the clinical testing techniques discussed in the book Detailed explanations of test protocols enable audiologists and otolaryngologists to use audiologic data to make thoughtful and effective management decisions for infants and children with hearing loss Step-by-step guidelines on the diagnosis and treatment of pediatric hearing and balance disorders give students practical information they need and help practitioners accurately evaluate patients Graduate students in audiology will read this text cover to cover and practicing audiologists will frequently refer to it in their daily practice.
