Download or read book The Effects of Simulated Hearing Loss on the Auditory Brainstem Response Components written by and published by . This book was released on 2006 with total page 218 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Use of Simulation Techniques to Investigate the Effects of Conductive Hearing Loss on the Auditory Brainstem Response written by Molly Bishop and published by . This book was released on 2018 with total page 143 pages. Available in PDF, EPUB and Kindle. Book excerpt: A click-evoked Auditory Brainstem Response (ABR) was recorded on 28 normal hearing adult participants to determine the effects of different degrees of conductive hearing loss on the response properties of the ABR. Participants were divided at random into two groups: the normal hearing group and the simulated conductive hearing loss group. In the normal hearing group, baseline behavioral pure tone audiometry from 250-8000 Hz and acoustic immittance testing (tympanometry and contralateral acoustic reflex thresholds from 500-2000 Hz) were performed to ensure normal hearing and middle ear function. Then, ABR testing was performed in both right and left ears to click stimuli beginning at 80 dBnHL. Stimulus intensity was decreased in 10 dB increments until a stimulus intensity of 30 dBnHL was reached. At stimulus intensities less than 30 dB nHL, stimulus intensity was decreased in 5 dB increments until the participant's ABR threshold was determined. In the simulated conductive hearing loss group, baseline behavioral pure tone audiometry from 250-8000 Hz and acoustic immittance testing (tympanometry and contralateral acoustic reflex thresholds from 500-2000 Hz) were performed to ensure normal hearing and middle ear function. Then, 5 mm of moleskin was placed in the tubing for the ER3A insert receivers and pure tone air conduction thresholds were re-measured in each ear. For the conductive group, the ABR was recorded using the ER3A insert receivers with moleskin. The ABR was recorded in both right and left ears to click stimuli beginning at 80 dBnHL. Stimulus intensity was decreased in 10 dB increments until a stimulus intensity of 60 dBnHL was reached. At stimulus intensities less than 60 dBnHL, stimulus intensity was decreased in 5 dB increments until the participant's ABR threshold was determined. For both groups, results revealed an increase in the mean absolute latencies of waves I, III, and V as stimulus intensity decreased. In contrast, results showed a decrease in the mean peak-to-peak amplitudes for waves I-I' and V-V' as a function of stimulus intensity. Mean interpeak latency values were consistent across stimulus intensities. Mean absolute latency values for all waves were greater for the simulated hearing loss group than the normal hearing group. In contrast, the mean peak-to-peak amplitude values for waves I-I' and V-V' were smaller for the simulated hearing loss group than the normal hearing group. These results were compared to previous data collected in the ABR literature on both normal hearing and conductive hearing loss participants. Results for both groups in the current study were in good agreement with the ABR literature as seen in the mean ABR values and the variability represented by standard deviation measurements. The data collected from this study will be used to develop a parametric approach to generating simulated responses for the commercially available Auditory Brainstem Response (ABR) recording simulator, ISAO by Intelligent Hearing Systems. This data will serve as basis for developing functions of response characteristics such as peak latency and amplitude as well as recording parameters like intensity, rate and stimulus characteristics. Further research should be conducted to determine the effects of other stimulus parameters on the ABR. These stimulus parameters include rate, polarity, and frequency.
Download or read book Rise fall Times and Center Frequency Effects on Auditory Brainstem Response to Tone Bursts in Persons with Normal Hearing and Simulated Hearing Loss written by and published by . This book was released on 2006 with total page 234 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Modeling Sensorineural Hearing Loss written by Walt Jesteadt and published by Routledge. This book was released on 2019-01-04 with total page 515 pages. Available in PDF, EPUB and Kindle. Book excerpt: A recent study indicates that 20 million people in the United States have significant sensorineural hearing loss. Approximately 95% of those people have partial losses, with varying degrees of residual hearing. These percentages are similar in other developed countries. What changes in the function of the cochlea or inner ear cause such losses? What does the world sound like to the 19 million people with residual hearing? How should we transform sounds to correct for the hearing loss and maximize restoration of normal hearing? Answers to such questions require detailed models of the way that sounds are processed by the nervous system, both for listeners with normal hearing and for those with sensorineural hearing loss. This book contains chapters describing the work of 25 different research groups. A great deal of research in recent years has been aimed at obtaining a better physiological description of the altered processes that cause sensorineural hearing loss and a better understanding of transformations that occur in the perception of those sounds that are sufficiently intense that they can still be heard. Efforts to understand these changes in function have lead to a better understanding of normal function as well. This research has been based on rigorous mathematical models, computer simulations of mechanical and physiological processes, and signal processing simulations of the altered perceptual experience of listeners with sensorineural hearing loss. This book provides examples of all these approaches to modeling sensorineural hearing loss and a summary of the latest research in the field.
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 A Comparison of Auditory Brainstem Response and Middle Latency Response in the Measurement of Simulated High Frequency Hearing Loss written by Sherrie Parker and published by . This book was released on 1988 with total page 122 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Simulation of the Effects of Sensorineural Hearing Loss written by Isaac John Graf and published by . This book was released on 1997 with total page 224 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Auditory Brainstem Evoked Potentials written by Ananthanarayan Krishnan and published by Plural Publishing. This book was released on 2021-10-06 with total page 401 pages. Available in PDF, EPUB and Kindle. Book excerpt: Auditory Brainstem Evoked Potentials: Clinical and Research Applications provides a solid foundation of the theoretical principles of auditory evoked potentials. This understanding is important for both the development of optimal clinical test strategies, and interpretation of test results. Developed for graduate-level audiology students, this comprehensive text aims to build a fundamental understanding of auditory evoked brainstem responses (ABR), and their relationship to normal and impaired auditory function, as well as its various audiologic and neurootologic applications. In addition to covering the classical onset ABR, the book provides a thorough review of sustained brainstem responses elicited by complex sounds, including auditory steady state response (ASSR), envelope following response (EFR), and frequency following response (FFR), and the growing clinical and research applications of these responses. By exploring why certain stimulus manipulations are required to answer specific clinical questions, the author provides the resources needed for students and clinicians to make reasoned decisions about the optimal protocol to use in a given situation. Key Features: * A full chapter devoted to laboratory exercises * Numerous illustrations to help explain key concepts * Description of neural bases underlying amplitude and latency changes * Troubleshooting techniques * End-of-chapter summaries
Download or read book The Effect of Hearing Loss on Balance Control written by Victoria C. Kowalewski and published by . This book was released on 2018 with total page 189 pages. Available in PDF, EPUB and Kindle. Book excerpt: We investigated the contribution of auditory inputs to balance control in healthy young adults and older adults with normal hearing by simulating hearing loss, as well as in older adult with hearing loss by testing with and without hearing aids. Twenty healthy young adults with normal hearing, twenty older adults with normal hearing, and twenty older adults with hearing aids completed single- and dual- tasks consisting of a standardized audiology test (BKB-SIN) and maintaining standing balance in response to surface translations. Participants performed an auditory task of repeating back sentences from a standardized audiological test, the Bamford-Kowal-Bench Speech-In-Noise (BKB-SIN), played through wireless noise-cancelling headphones under randomized normal hearing and simulated hearing loss conditions or through surrounding speakers under hearing aid or no hearing aid condition. Simulated hearing loss was achieved using Adobe Audition software and a FFT logarithmic curve to manipulate sound volume and frequencies of standardized sentences according to age-related moderate hearing loss documented in literature. Backward surface translation perturbations inducing a forward loss of balance were synchronized with the auditory task and presented randomly at three levels (0m/s2, 2m/s2, and 5 m/s2). Primary outcome measures included: maximum Center of Pressure - Center of Mass (COP-COM) distance in response to perturbation during the first compensatory step, reaction time for initiating the first compensatory step, number of steps after loss of balance, and performance on the BKB-SIN. Repeated measures ANOVA were conducted for each dependent variable with respect to perturbation level and auditory condition. Results show reaction time decreases, maximum COP-COM distance increases, and number of steps increases as perturbation level increases across all groups. BKB-SIN scores and reaction time were significantly worse under the simulated hearing loss condition. Hearing aids significantly improved BKB-SIN scores, but not balance scores. Hearing loss affects reactive balance control, particularly while simultaneously attending to auditory tasks. Older adults maintain the ability to initiate compensatory steps, but they require an increase number of steps to regain balance. Individuals with hearing loss may be at greater risk of falling compared to individuals with normal hearing due to age-related cognitive and neurodegenerative changes associated with hearing loss.
Download or read book Effect of High Frequency Hearing Loss on the Auditory Brainstem Response Using 500 Hz Tone Bursts written by Laura Ray Moncrief and published by . This book was released on 1990 with total page 102 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Dissertation Abstracts International written by and published by . This book was released on 2008 with total page 902 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Frequency Following Response written by Nina Kraus and published by Springer. This book was released on 2017-01-09 with total page 306 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume will cover a variety of topics, including child language development; hearing loss; listening in noise; statistical learning; poverty; auditory processing disorder; cochlear neuropathy; attention; and aging. It will appeal broadly to auditory scientists—and in fact, any scientist interested in the biology of human communication and learning. The range of the book highlights the interdisciplinary series of questions that are pursued using the auditory frequency-following response and will accordingly attract a wide and diverse readership, while remaining a lasting resource for the field.
Download or read book Computational Models of the Auditory System written by Ray Meddis and published by Springer Science & Business Media. This book was released on 2010-06-16 with total page 290 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Springer Handbook of Auditory Research presents a series of comprehensive and synthetic reviews of the fundamental topics in modern auditory research. The v- umes are aimed at all individuals with interests in hearing research including advanced graduate students, post-doctoral researchers, and clinical investigators. The volumes are intended to introduce new investigators to important aspects of hearing science and to help established investigators to better understand the fundamental theories and data in fields of hearing that they may not normally follow closely. Each volume presents a particular topic comprehensively, and each serves as a synthetic overview and guide to the literature. As such, the chapters present neither exhaustive data reviews nor original research that has not yet appeared in pe- reviewed journals. The volumes focus on topics that have developed a solid data and conceptual foundation rather than on those for which a literature is only beg- ning to develop. New research areas will be covered on a timely basis in the series as they begin to mature.
Download or read book The effect of hearing loss on neural processing written by Jonathan E. Peelle and published by Frontiers Media SA. This book was released on 2015-06-03 with total page 377 pages. Available in PDF, EPUB and Kindle. Book excerpt: Efficient auditory processing requires the rapid integration of transient sensory inputs. This is exemplified in human speech perception, in which long stretches of a complex acoustic signal are typically processed accurately and essentially in real-time. Spoken language thus presents listeners’ auditory systems with a considerable challenge even when acoustic input is clear. However, auditory processing ability is frequently compromised due to congenital or acquired hearing loss, or altered through background noise or assistive devices such as cochlear implants. How does loss of sensory fidelity impact neural processing, efficiency, and health? How does this ultimately influence behavior? This Research Topic explores the neural consequences of hearing loss, including basic processing carried out in the auditory periphery, computations in subcortical nuclei and primary auditory cortex, and higher-level cognitive processes such as those involved in human speech perception. By pulling together data from a variety of disciplines and perspectives, we gain a more complete picture of the acute and chronic consequences of hearing loss for neural functioning.
Download or read book The Auditory Brainstem Response written by John T. Jacobson and published by Taylor & Francis Group. This book was released on 1985 with total page 482 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Advances in Clinical Audiology written by Stavros Hatzopoulos and published by BoD – Books on Demand. This book was released on 2017-03-29 with total page 261 pages. Available in PDF, EPUB and Kindle. Book excerpt: Advances in Clinical Audiology is an excursus on the latest findings in clinical audiology with a strong emphasis in new emerging technologies which facilitate and optimize a better assessment of the human patient. The book has been edited with a strong educational perspective (all chapters include an extensive introduction to their corresponding topic and an extensive glossary of terms). The book contains material suitable for graduate students in audiology, ENT, hearing science, and neuroscience.
Download or read book Basic Concepts of Clinical Electrophysiology in Audiology written by John D. Durrant and published by Plural Publishing. This book was released on 2022-01-07 with total page 505 pages. Available in PDF, EPUB and Kindle. Book excerpt: Basic Concepts of Clinical Electrophysiology in Audiology is a revolutionary textbook, combining the research and expertise of both distinguished experts and up-and-coming voices in the field. By taking a multidisciplinary approach to the subject, the editors of this graduate-level text break down all aspects of electrophysiology to make it accessible to audiology students. In addition to defining the basics of the tools of the trade and their routine uses, the authors also provide ample presentations of new approaches currently undergoing continuing research and development. The goal of this textbook is to give developing audiologists a broad and solid basis of understanding of the methods in common or promising practice. Throughout the text, individual chapters are divided into “episodes,” each examining a facet of the overarching chapter’s topic. With different experts handling each episode, readers are exposed to outstanding professionals in the field. This text singularly stitches together the chapters and their episodes to build from foundational concepts to more complex issues that clinicians are likely to face on their road to full clinical competency. As collections of episodes, the writers and editors thus endeavor to present a series of stories that build throughout the book, in turn allowing readers to build a broader interest in the subject. Key Features * Heads Up sections in each chapter introduce more advanced content to expose readers to what lies beyond the basic level and further enhance the main chapter content and “entertainment value” * Take home messages at the end of each chapter serve to focus the reader’s attention, encourage review, and discourage superficial learning by “just reading the abstract” * More than 450 innovative illustrations use combinations of panels, insets, and/or gray tone to facilitate reader understanding, optimize portrayal of data, and unify concepts across chapters * Numerous case studies and references to practical clinical issues and results are included throughout the book * Keywords are highlighted in-text to improve both attention and retention of critical terms and ease of returning to review them
