Download or read book Electrode Position Channel Interaction and Speech Perception in Cochlear Implant Listeners written by Lindsay A. DeVries and published by . This book was released on 2018 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cochlear implants (CI) are surgically implanted devices that provide sound input to individuals with severe-to-profound hearing loss. While relatively successful, speech understanding abilities are highly variable among implant listeners in both quiet and noisy environments. One source of this variability is the electrode-neuron interface, which refers to how well each electrode activates target auditory neurons. Poor electrode-neuron interfaces may increase channel interaction, which can distort spectral information and result in decreased speech understanding. Electrode position, bone and tissue growth, and the integrity of the auditory neurons are important factors that affect the electrode-neuron interface. Currently, it is not possible to directly measure neural integrity in CI listeners; therefore, obtaining information about electrode position is an alternative approach to assessing the electrode-neuron interface. Information about electrode position is available through computerized tomography (CT) imaging. However, CT imaging is not readily available to audiologists, thus limiting its usefulness in a clinical setting. The purpose of this dissertation work was to examine the relationship between CT-estimated electrode position and two measures of channel interaction: an objective measure, the electrically evoked compound action potential (Experiment 1) and a behavioral measure, the psychophysical tuning curve (Experiment 2). In Experiment 3, we created novel listener strategies based on channels with poor electrode position and excessive channel interaction (based on measures from Experiment 2) in an effort to improve spectral resolution and speech understanding. Results from Experiment 1 and 2 demonstrated that the electrically evoked compound action potential and psychophysical tuning curves, two measures of channel interaction, are correlated with CT-estimates of electrode position. In other words, those electrodes farther from the inner wall of the cochlea tended to exhibit excessive channel interaction with these measures. Results from Experiment 3 suggest that CI listeners can gain improved speech understanding when manipulating channels to compensate for poor electrode position or excessive channel interaction. Importantly, manipulating the "wrong" channels can lead to a detriment in performance. This dissertation work lays the groundwork for assessment of an important aspect of the electrode-neuron interface and the practical application of these measures to CI listener strategies.
Download or read book Cochlear Implants Auditory Prostheses and Electric Hearing written by Fan-Gang Zeng and published by Springer Science & Business Media. This book was released on 2004-04-21 with total page 502 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cochlear implants have instigated a popular but controversial revolution in the treatment of deafness. This book discusses the physiological bases of using artificial devices to electrically stimulate the auditory system to interpret sounds. As the first successful device to restore neural function, the cochlear implant has served as a model for research in neuroscience and biomedical engineering. Implants and other auditory prostheses are discussed in the context of historical treatment, engineering, psychophysics, and clinical issues as well as their implications for speech, cognition, behavior, and the long-term effects on recipients .
Download or read book Scientific Foundations of Audiology written by Anthony T. Cacace and published by Plural Publishing. This book was released on 2016-04-15 with total page 401 pages. Available in PDF, EPUB and Kindle. Book excerpt: With advancements across various scientific and medical fields, professionals in audiology are in a unique position to integrate cutting-edge technology with real-world situations. Scientific Foundations of Audiology provides a strong basis and philosophical framework for understanding various domains of hearing science in the context of contemporary developments in genetics, gene expression, bioengineering, neuroimaging, neurochemistry, cochlear and mid-brain implants, associated speech processing and understanding, molecular biology, physics, modeling, medicine, and clinical practice. Key features of this text include: Highly technical information presented in a cohesive and understandable manner (i.e., concepts without complex equations)Discussion of integrating newly developed technology within the clinical practice of audiologyState-of-the-art contributions from a stellar array of international, world-class experts Scientific Foundations of Audiology is geared toward doctoral students in audiology, physics, and engineering; residents in otolaryngology, neurology, neurosurgery, and pediatrics; and those intermediaries between innovation and clinical reality.
Download or read book Programming Cochlear Implants written by Jace Wolfe and published by Plural Publishing. This book was released on 2014-10-31 with total page 409 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Cochlear Implant Patient Assessment written by René H. Gifford and published by Plural Publishing. This book was released on 2020-02-04 with total page 205 pages. Available in PDF, EPUB and Kindle. Book excerpt: This updated second edition of Cochlear Implant Patient Assessment, Evaluation of Candidacy, Performance, and Outcomes, Second Edition is an instrumental reference for clinicians working with cochlear implant recipients and graduate students in the fields of speech-language pathology and audiology. The content of the text is logically organized, and begins with necessary background information for cochlear implant candidacy and the selection process. Later chapters provide information on assessment of implant candidacy, postoperative assessment of performance over the long term, and possibilities for future research and understanding. Though Cochlear Implant Patient Assessment, Second Edition contains useful information for even the most seasoned clinicians, it will serve an especially important role in the education and training of students and clinicians being introduced to cochlear implant clinical practice. Having an experienced audiologist and speech-language pathologist authoring this work unites the inter-disciplinary nature of this practice. New to the Second Edition: * Up-to-date research guiding candidacy and outcomes assessment—particularly relevant for cases of hearing preservation, determining bilateral CI candidacy, bimodal hearing, and assessment of the nontraditional cochlear implant candidate * Assessment of candidacy and postoperative outcomes for individuals with unilateral deafness * Assessment of non-English-speaking patients * Role of imaging in device selection and postoperative assessment Disclaimer: Please note that ancillary content (such as documents, audio, and video, etc.) may not be included as published in the original print version of this book.
Download or read book Auditory Prostheses written by Fan-Gang Zeng and published by Springer Science & Business Media. This book was released on 2011-09-15 with total page 397 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cochlear implants are currently the standard treatment for profound sensorineural hearing loss. In the last decade, advances in auditory science and technology have not only greatly expanded the utility of electric stimulation to other parts of the auditory nervous system in addition to the cochlea, but have also demonstrated drastic changes in the brain in responses to electric stimulation, including changes in language development and music perception. Volume 20 of SHAR focused on basic science and technology underlying the cochlear implant. However, due to the newness of the ideas and technology, the volume did not cover any emerging applications such as bilateral cochlear implants, combined acoustic-electric stimulation, and other types of auditory prostheses, nor did it review brain plasticity in responses to electric stimulation and its perceptual and language consequences. This proposed volume takes off from Volume 20, and expands the examination of implants into new and highly exciting areas. This edited book starts with an overview and introduction by Dr. Fan-Gang Zeng. Chapters 2-9 cover technological development and the advances in treating the full spectrum of ear disorders in the last ten years. Chapters 10-15 discuss brain responses to electric stimulation and their perceptual impact. This volume is particularly exciting because there have been quantum leap from the traditional technology discussed in Volume 20. Thus, this volume is timely and will be of real importance to the SHAR audience.
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 Speech Processing in the Auditory System written by Steven Greenberg and published by Springer Science & Business Media. This book was released on 2006-05-09 with total page 487 pages. Available in PDF, EPUB and Kindle. Book excerpt: Although speech is the primary behavioral medium by which humans communicate, its auditory basis is poorly understood, having profound implications on efforts to ameliorate the behavioral consequences of hearing impairment and on the development of robust algorithms for computer speech recognition. In this volume, the authors provide an up-to-date synthesis of recent research in the area of speech processing in the auditory system, bringing together a diverse range of scientists to present the subject from an interdisciplinary perspective. Of particular concern is the ability to understand speech in uncertain, potentially adverse acoustic environments, currently the bane of both hearing aid and speech recognition technology. There is increasing evidence that the perceptual stability characteristic of speech understanding is due, at least in part, to elegant transformations of the acoustic signal performed by auditory mechanisms. As a comprehensive review of speech's auditory basis, this book will interest physiologists, anatomists, psychologists, phoneticians, computer scientists, biomedical and electrical engineers, and clinicians.
Download or read book Physiology Psychoacoustics and Cognition in Normal and Impaired Hearing written by Pim van Dijk and published by Springer. This book was released on 2016-04-14 with total page 487 pages. Available in PDF, EPUB and Kindle. Book excerpt: The International Symposium on Hearing is a prestigious, triennial gathering where world-class scientists present and discuss the most recent advances in the field of human and animal hearing research. The 2015 edition will particularly focus on integrative approaches linking physiological, psychophysical and cognitive aspects of normal and impaired hearing. Like previous editions, the proceedings will contain about 50 chapters ranging from basic to applied research, and of interest to neuroscientists, psychologists, audiologists, engineers, otolaryngologists, and artificial intelligence researchers.
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 Speech Perception with Multi channel Cochlear Implants written by Melanie J. Kendall and published by . This book was released on 1999 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Cochlear and Brainstem Implants written by Aage R. Møller and published by Karger Medical and Scientific Publishers. This book was released on 2006-01-01 with total page 237 pages. Available in PDF, EPUB and Kindle. Book excerpt: Today cochlear implants are the most successful of all prostheses of the nervous system. They are used in individuals who are deaf or suffer from a severe hearing deficiency caused by loss of cochlear hair cells. Auditory brainstem implants provide stimulation of the cochlear nucleus and are used in patients with an auditory nerve dysfunction, a deformed cochlea which does not allow cochlear implantation, or traumatic auditory nerve injury. In this volume different aspects of cochlear implantation such as the role of neural plasticity, the interaction with the development of the auditory system, and the optimal time of implantation in children (sensitive periods) are discussed in detail. Further, the processors and the algorithms used in modern cochlear implants are described The second part is devoted to auditory brainstem implants. It describes surgical techniques, methods for intraoperative testing as well as speech processing. It also deals with electrical stimulation of neural tissue and the neurophysiologic basis for cochlear and brainstem implants. The publication provides the latest scientific and clinical knowledge on cochlear and brainstem implants and is highly recommended to audiologists, otolaryngologists and also neurosurgeons.
Download or read book Cochlear Implants written by John K. Niparko and published by Lippincott Williams & Wilkins. This book was released on 2009 with total page 372 pages. Available in PDF, EPUB and Kindle. Book excerpt: Thoroughly updated for its Second Edition, this book provides an in-depth discussion on prosthetic restoration of hearing via implantation. The text succinctly discusses the scientific principles behind cochlear implants, examines the latest technology, and offers practical advice on how to assess candidates, how to implant the devices, and what rehabilitation is most effective. The authors thoroughly examine the outcomes of cochlear implantation, the impact on the patient's quality of life, the benefits in relation to the costs, and the implications of cochlear implants for language and speech acquisition and childhood education.
Download or read book The Handbook of Language and Speech Disorders written by Nicole Müller and published by John Wiley & Sons. This book was released on 2012-07-10 with total page 674 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Handbook of Speech and Language Disorders presents a comprehensive survey of the latest research in communication disorders. Contributions from leading experts explore current issues, landmark studies, and the main topics in the field, and include relevant information on analytical methods and assessment. A series of foundational chapters covers a variety of important general principles irrespective of specific disorders. These chapters focus on such topics as classification, diversity considerations, intelligibility, the impact of genetic syndromes, and principles of assessment and intervention. Other chapters cover a wide range of language, speech, and cognitive/intellectual disorders.
Download or read book Speech Perception with Single channel Cochlear Implants written by Stuart Michael Rosen and published by . This book was released on 1988 with total page 508 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Technology of Binaural Listening written by Jens Blauert and published by Springer Science & Business Media. This book was released on 2013-06-07 with total page 516 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book reports on the application of advanced models of the human binaural hearing system in modern technology, among others, in the following areas: binaural analysis of aural scenes, binaural de-reverberation, binaural quality assessment of audio channels, loudspeakers and performance spaces, binaural perceptual coding, binaural processing in hearing aids and cochlea implants, binaural systems in robots, binaural/tactile human-machine interfaces, speech-intelligibility prediction in rooms and/or multi-speaker scenarios. An introduction to binaural modeling and an outlook to the future are provided. Further, the book features a MATLAB toolbox to enable readers to construct their own dedicated binaural models on demand.
Download or read book Modern Speech Recognition written by S. Ramakrishnan and published by . This book was released on 2012 with total page 340 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book focuses primarily on speech recognition and the related tasks such as speech enhancement and modeling. This book comprises 3 sections and thirteen chapters written by eminent researchers from USA, Brazil, Australia, Saudi Arabia, Japan, Ireland, Taiwan, Mexico, Slovakia and India. Section 1 on speech recognition consists of seven chapters. Sections 2 and 3 on speech enhancement and speech modeling have three chapters each respectively to supplement section 1. We sincerely believe that thorough reading of these thirteen chapters will provide comprehensive knowledge on modern speech recognition approaches to the readers.
