Download or read book Investigation of Binaural Interference in Adults written by Brady Schwab and published by . This book was released on 1999 with total page 112 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Binaural Interference a Guide for Audiologists written by James Jerger and published by Plural Publishing. This book was released on 2018-02-23 with total page 137 pages. Available in PDF, EPUB and Kindle. Book excerpt: Binaural interference occurs when the speech input to one ear interferes with the input to the other ear during binaural stimulation. The first published study on binaural interference twenty-five years ago demonstrated that some individuals, particularly older individuals, perform more poorly with two hearing aids than with one and/or more poorly with binaural than monaural stimulation on electrophysiologic as well as behavioral measures. Binaural interference is relevant to every audiologist because it impacts the successful use of binaural hearing aids and may explain communicative difficulty in noise or other challenging listening situations in persons with normal-hearing sensitivity as well as persons with hearing loss. This exciting new book written by two highly respected audiologists first traces the history of its study by researchers, then reviews the evidence, both direct and indirect, supporting its reality. This is followed by a discussion of the possible causes of the phenomenon and in-depth analysis of illustrative cases. The authors outline a systematic approach to the clinical detection, evaluation and amelioration of individuals who exhibit binaural interference. Suggestions are furnished on improved techniques for evaluation of the binaural advantage in general and on sensitized detection of the disorder in particular. The book ends with recommendations for future directions. Given the adverse impact of binaural interference on auditory function and its occurrence in a significant subset of the population with hearing loss, as well as in some individuals with normal-hearing sensitivity, research on binaural interference only recently has begun to flourish, and adaptation of audiologic clinical practice to identify, assess, and manage individuals with binaural interference has yet to become widespread. The authors intend for the book to provide impetus for pursuing further research and to encourage audiologists to explore the possibility of binaural interference when patient complaints suggest it and when performing audiologic evaluations. The book is intended for practicing clinical audiologists, audiology students, and hearing scientists.
Download or read book Investigation of Binaural Interference Across Two Age Groups written by Bruna Silveira Sobiesiak and published by . This book was released on 2006 with total page 98 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Dichotic Binaural and Monaural NU 6 Word Recognition Performance for Young and Older Adults written by Traci A. Hammond and published by . This book was released on 2010 with total page 42 pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract: Listening to a sound with two ears, or binaural listening, helps a listener to localize and understand the message better than with one ear alone. For some older adults with hearing loss, however, binaural listening proves to be disadvantageous, especially in situations with background noise (i.e., binaural interference). The present study examined binaural processing abilities for two subject groups: young adults with normal hearing (ages 18-30 years) and older adults with sensorineural hearing loss (ages 60-90 years). Two types of speech-recognition assessments were used: (1) word recognition in noise and (2) dichotic word recognition. For the word recognition in noise tasks, subjects responded under three conditions: (1) monaural left-ear, (2) monaural right-ear, and (3) binaural. For the dichotic listening tasks, subjects were given three response conditions: (1) free recall (repeat both stimuli in any order), (2) directed-recall right (repeat stimuli heard in right ear first), and (3) directed-recall left (repeat stimuli heard in left ear first). Results showed that both subject groups exhibited expected patterns of performance for both tasks. Specifically, both young and older adults performed better in the binaural condition than with either ear alone in the word recognition in noise task. For the dichotic listening task, older adult subjects showed a larger mean REA than young adults, and both groups showed increased ear advantages in each respective directed attention condition (i.e., directed right and directed left). Further, initial results suggest that recognition performance on both speech measures was poorer for the older adults with hearing loss than for the young adults with normal hearing. Past studies have shown that older adults with hearing loss and binaural interference may have more success using one hearing aid rather than two (Carter et al., 2001; Chmiel et al., 1997). The results of the present study therefore may prove to be significant in supporting future aural rehabilitation methods and research related to geriatric audiology.
Download or read book Binaural Hearing written by Ruth Y. Litovsky and published by Springer Nature. This book was released on 2021-03-01 with total page 425 pages. Available in PDF, EPUB and Kindle. Book excerpt: The field of Binaural Hearing involves studies of auditory perception, physiology, and modeling, including normal and abnormal aspects of the system. Binaural processes involved in both sound localization and speech unmasking have gained a broader interest and have received growing attention in the published literature. The field has undergone some significant changes. There is now a much richer understanding of the many aspects that comprising binaural processing, its role in development, and in success and limitations of hearing-aid and cochlear-implant users. The goal of this volume is to provide an up-to-date reference on the developments and novel ideas in the field of binaural hearing. The primary readership for the volume is expected to be academic specialists in the diverse fields that connect with psychoacoustics, neuroscience, engineering, psychology, audiology, and cochlear implants. This volume will serve as an important resource by way of introduction to the field, in particular for graduate students, postdoctoral scholars, the faculty who train them and clinicians.
Download or read book An Experimental Investigation of the Effectiveness of Binaural Hearing for Adults with Hearing Impairments written by Louis Michael Di Carlo and published by . This book was released on 1958 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Listening with Two Ears New Insights and Perspectives in Binaural Research written by Huiming Zhang and published by Frontiers Media SA. This book was released on 2023-11-27 with total page 277 pages. Available in PDF, EPUB and Kindle. Book excerpt: Hearing is dependent on neural processing of acoustic cues obtained by the left and right ears. Neural signals driven by the two ears are integrated at multiple levels of the central auditory system, which enables animals including humans to perform various functions including localization of a sound source. A natural listening environment typically contains sounds from multiple sources. These sounds can have different spectral and temporal features and occur at either the same or different time. Integration can happen among neural signals elicited by the same or different sounds. The way of integration can greatly affect how individual sounds are sensed and perceived. Functions such as auditory grouping and stream segregation, which are central to establishing coherent auditory images in a complex listening environment, are highly dependent on the way of integration. Binaural hearing is complicated by individual differences and developmental changes in head and pinna shape/size as binaural cues can be affected by these differences and changes. Furthermore, neural processing of binaural cues can be influenced by hearing impairments and the use of hearing aids and cochlear implants. These factors likely require a listener to optimize the use of binaural cues through learning and to use plastic changes in the nervous system to perform the optimization. Great strides have been made in understanding binaural processing in normal and impaired auditory systems. This Research Topic aims to highlight some of the latest findings in the following areas: 1) Animal behavioral and human psychoacoustical studies of binaural hearing; 2) Neural encoding and processing of binaural cues and structural as well as neurophysiological bases of such encoding and processing; 3) Contribution of binaural neural processing to auditory functions such as sound-source localization, binaural fusion, binaural interference, spatial release from masking, auditory grouping, and auditory stream segregation; 4) Computational models of binaural processing; 5) Learning and plastic changes in binaural processing following hearing loss or alterations of acoustic environment and structural as well as physiological bases of these behavioral changes; 6) Clinical aspects of binaural processing including application of processing strategies, including research on the benefits of bilateral cochlear implantation, and the neural correlates thereof
Download or read book Outcome Measures to Assess the Benefit of Interventions for Adults with Hearing Loss From Research to Clinical Application written by Isabelle Boisvert and published by Frontiers Media SA. This book was released on 2022-09-28 with total page 173 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Hearing Health Care for Adults written by National Academies of Sciences, Engineering, and Medicine and published by National Academies Press. This book was released on 2016-10-06 with total page 325 pages. Available in PDF, EPUB and Kindle. Book excerpt: The loss of hearing - be it gradual or acute, mild or severe, present since birth or acquired in older age - can have significant effects on one's communication abilities, quality of life, social participation, and health. Despite this, many people with hearing loss do not seek or receive hearing health care. The reasons are numerous, complex, and often interconnected. For some, hearing health care is not affordable. For others, the appropriate services are difficult to access, or individuals do not know how or where to access them. Others may not want to deal with the stigma that they and society may associate with needing hearing health care and obtaining that care. Still others do not recognize they need hearing health care, as hearing loss is an invisible health condition that often worsens gradually over time. In the United States, an estimated 30 million individuals (12.7 percent of Americans ages 12 years or older) have hearing loss. Globally, hearing loss has been identified as the fifth leading cause of years lived with disability. Successful hearing health care enables individuals with hearing loss to have the freedom to communicate in their environments in ways that are culturally appropriate and that preserve their dignity and function. Hearing Health Care for Adults focuses on improving the accessibility and affordability of hearing health care for adults of all ages. This study examines the hearing health care system, with a focus on non-surgical technologies and services, and offers recommendations for improving access to, the affordability of, and the quality of hearing health care for adults of all ages.
Download or read book Handbook of Central Auditory Processing Disorder Volume I Second Edition written by Frank E. Musiek and published by Plural Publishing. This book was released on 2013-11-06 with total page 769 pages. Available in PDF, EPUB and Kindle. Book excerpt: Chermak and Musiek's two-volume, award-winning handbooks are back in newly revised editions. Extensively revised and expanded, Volume I provides comprehensive coverage of the auditory neuroscience and clinical science needed to accurately diagnose the range of developmental and acquired central auditory processing disorders in children, adults, and older adults. Building on the excellence achieved with the best-selling 1st editions which earned the 2007 Speech, Language, and Hearing Book of the Year Award, the second editions include contributions from world-renowned authors detailing major advances in auditory neuroscience and cognitive science; diagnosis; best practice intervention strategies in clinical and school settings; as well as emerging and future directions in diagnosis and intervention. Exciting new chapters for Volume II include: Development of the Central Auditory Nervous System, by Jos J. EggermontCausation: Neuroanatomic Abnormalities, Neurological Disorders, and Neuromaturational Delays, by Gail D. Chermak and Frank E. MusiekCentral Auditory Processing As Seen From Dichotic Listening Studies, by Kenneth Hugdahl and Turid HellandAuditory Processing (Disorder): An Intersection of Cognitive, Sensory, and Reward Circuits, by Karen Banai and Nina KrausClinical and Research Issues in CAPD, by Jeffrey Weihing, Teri James Bellis, Gail D. Chermak, and Frank E. MusiekPrimer on Clinical Decision Analysis, by Jeffrey Weihing and Sam AtchersonCase Studies, by Annette E. HurleyThe CANS and CAPD: What We Know and What We Need to Learn, by Dennis P. Phillips
Download or read book Binaural Listening in Young and Middle aged Adults written by and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Difficulty understanding speech in the presence of noise is a common complaint of middle-aged and older adults with and without hearing loss. There is an incomplete picture of what contributes to difficulties understanding speech-in-noise in adults who have normal audiograms. As humans we listen binaurally, so declines in binaural processing may contribute to speech-in-noise difficulties. We examined the effects of age on the upper frequency limit of interaural phase difference (IPD) detection and IPD detection at fixed frequencies. We also examined a speech-in-noise measure of spatial separation across young and middle-aged, normal-hearing individuals. Participants were young (n=12) and middle-aged (n=8) adults with normal and symmetrical hearing from 250-8000 Hz. Two interaural phase difference tasks were undertaken. The first assessed interaural phase difference discrimination across frequencies and the second assessed interaural phase difference discrimination at fixed frequencies (500, 750, 1000, 1125 Hz). In addition, the speech-in-noise measure of benefit from spatial separation was assessed by having subjects complete the words-in-noise test with speech and noise at 0° and again with speech at 0° and noise at 90°. The young group had significantly higher (better) upper frequency limits for interaural phase difference discrimination. There was no statistically significant difference between the IPD discrimination at fixed frequencies for the young and middle-aged group, contrary to what was hypothesized. The young group also did not have a greater benefit from spatial separation compared to the middle-aged group. The outcomes from this study add to a growing body of literature suggesting a decline in the upper frequency limit of IPD discrimination with advancing age. This negative effect of aging begins in middle-aged, normal-hearing listeners. The results from this study also suggest that factors other than age and IPD discrimination affect spatial processing in middle-aged adults with clinically normal audiograms. Knowing what contributes to difficulty understanding speech-in-noise will aid in counseling patients and will improve approaches to aural rehabilitation.
Download or read book The Influence of Interaural Asymmetries on Binaural Hearing Benefits in Adults with Cochlear Implants written by Emily Burg and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Binaural hearing gives rise to important spatial hearing abilities, including sound localization and segregation of speech from noise. Individuals with severe-to-profound hearing loss in one ear who receive a unilateral cochlear implant (SSD-CI), and individuals with severe-to-profound hearing loss in both ears who receive bilateral cochlear implants (BiCIs) experience reduced benefits of binaural hearing compared to normal hearing (NH) listeners, making it difficult for many patients to communicate in the complex acoustic environments frequently encountered in daily life. However, the implications of hearing loss are not limited to behavioral performance. Successful communication requires mental resources, including engagement of attentional mechanisms and listening effort. Individuals with hearing loss frequently report elevated listening effort compared to individuals with normal hearing, which is associated with adverse outcomes including stress, fatigue, and social withdrawal. Therefore, it is imperative to investigate factors limiting binaural benefits and contributing to elevated listening effort in CI patients. Binaural hearing relies on the successful integration of information across ears. Thus, interaural asymmetries in the delivery and encoding of information have the potential to limit binaural hearing abilities in CI patients. BiCI patients can experience interaural asymmetries due to pathological and surgical factors, and SSD-CI patients have inherent interaural asymmetry due to the difference in signal fidelity between acoustic and electric hearing. The overarching goal of this dissertation was to investigate the effect of across-ear asymmetries on binaural hearing outcomes in CI patients. The studies described in the subsequent chapters provide important insight into the amount of listening effort exerted by individuals with SSD and BiCIs in various listening conditions, elucidate potential mechanisms limiting binaural unmasking benefit in BiCI patients, and explore a novel avenue for the objective assessment of binaural fusion.
Download or read book The Binaural Middle Latency Response in Noise BMIN written by Jeffrey Weihing and published by . This book was released on 2009 with total page 222 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Clinical Topics in Hearing Aid Research written by Jason A. Galster and published by Lulu.com. This book was released on 2013 with total page 223 pages. Available in PDF, EPUB and Kindle. Book excerpt: Clinical Topics in Hearing Aid Research provides a topic-driven review of modern research in hearing aids. Readers will find this text easy to understand with clear clinical messages that are easily applied to routine practice.
Download or read book Advances in Sound Localization written by Pawel Strumillo and published by BoD – Books on Demand. This book was released on 2011-04-11 with total page 608 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sound source localization is an important research field that has attracted researchers' efforts from many technical and biomedical sciences. Sound source localization (SSL) is defined as the determination of the direction from a receiver, but also includes the distance from it. Because of the wave nature of sound propagation, phenomena such as refraction, diffraction, diffusion, reflection, reverberation and interference occur. The wide spectrum of sound frequencies that range from infrasounds through acoustic sounds to ultrasounds, also introduces difficulties, as different spectrum components have different penetration properties through the medium. Consequently, SSL is a complex computation problem and development of robust sound localization techniques calls for different approaches, including multisensor schemes, null-steering beamforming and time-difference arrival techniques. The book offers a rich source of valuable material on advances on SSL techniques and their applications that should appeal to researches representing diverse engineering and scientific disciplines.
Download or read book Journal of the American Academy of Audiology written by and published by . This book was released on 2006 with total page 422 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Binaural Versus Monaural Listening in Young Adults in Competing Environments written by Kathryn P. Bowman and published by . This book was released on 2008 with total page 45 pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract: Binaural speech recognition abilities in a group of young adults with normal hearing were analyzed through dichotic listening and word recognition in noise tasks. Dichotic listening was tested under three conditions: free-recall, directed right, and directed left. Word recognition in noise was also tested under three conditions: binaural, monaural right, and monaural left. For the dichotic listening task, subjects exhibited a small right ear advantage (REA) under the free-recall condition, an even larger REA under the directed right condition, and a small left ear advantage (LEA) under the directed left condition. For the words in noise task, subjects exhibited similar scores for the binaural and monaural left conditions; monaural right scores were slightly worse. Results were compared to older adult data previously gathered for both dichotic listening (Roup et al., 2006) and word recognition in noise (Wilson, 2003) tasks. While the young adults exhibited a REA in the free-recall condition, the older adults exhibited an even greater REA. This suggests that there is an age related change in auditory processing that interferes with the ability to integrate the signals entering both ears in dichotic situations. For the words in noise task, both groups did worse as the signal-to-noise ratio decreased. However, young adults scored significantly better than the older adults overall. This suggests that younger adults are better able to separate a signal from background noise than older adults.
