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Difference in speech recognition performance with short and long release time processing has been noted in previous research. Recent research has established a connection between hearing aid users' cognitive abilities and release time. Researchers hope to use cognitive ability as a predictor of release time selection. The results from these previous studies have been contradictory. Some researchers hypothesized that linguistic context of speech recognition test materials was one of the factors that accounted for the inconsistency. The goal of the present study was to examine the relationship between hearing aid users' cognitive abilities and their aided speech recognition performance with short and long release time using speech recognition tests with different amounts of linguistic context. Thirty-four experienced hearing aid users participated in the present study. Their cognitive abilities were quantified using a reading span test. Digital behind-the-ear style hearing aids with adjustable release time settings were bilaterally fitted to the participants. Their aided speech recognition performance was evaluated using three tests with different amounts of linguistic context: the Word-In-Noise (WIN) test, the American Four Alternative Auditory Feature (AFAAF) test, and the Bamford-Kowal_Bench Speech-In-Noise (BKB-SIN) test. The present study replicated the results of an earlier study using an equivalent speech recognition test. The results from the present study also showed that hearing aid users with high cognitive abilities performed better on the AFAAF and the BKB-SIN compared to those with low cognitive abilities when using short release time processing. Results showed that none of the speech recognition tests produced significantly different performance between the short and the long release times for either cognitive group. This finding did not support the hypothesis of the effect of linguistic context on aided speech recognition performance with different release time settings. Results from the present study suggest that cognitive ability might not be important in prescribing release time.
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.
Speech recognition in ‘adverse conditions’ has been a familiar area of research in computer science, engineering, and hearing sciences for several decades. In contrast, most psycholinguistic theories of speech recognition are built upon evidence gathered from tasks performed by healthy listeners on carefully recorded speech, in a quiet environment, and under conditions of undivided attention. Building upon the momentum initiated by the Psycholinguistic Approaches to Speech Recognition in Adverse Conditions workshop held in Bristol, UK, in 2010, the aim of this volume is to promote a multi-disciplinary, yet unified approach to the perceptual, cognitive, and neuro-physiological mechanisms underpinning the recognition of degraded speech, variable speech, speech experienced under cognitive load, and speech experienced by theoretically relevant populations. This collection opens with a review of the literature and a formal classification of adverse conditions. The research articles then highlight those adverse conditions with the greatest potential for constraining theory, showing that some speech phenomena often believed to be immutable can be affected by noise, surface variations, or attentional set in ways that will force researchers to rethink their theory. This volume is essential for those interested in speech recognition outside laboratory constraints.
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.
​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.​
This volume brings together noted scientists who study presbycusis from the perspective of complementary disciplines, for a review of the current state of knowledge on the aging auditory system. Age-related hearing loss (ARHL) is one of the top three most common chronic health conditions affecting individuals aged 65 years and older. The high prevalence of age-related hearing loss compels audiologists, otolaryngologists, and auditory neuroscientists alike to understand the neural, genetic and molecular mechanisms underlying this disorder. A comprehensive understanding of these factors is needed so that effective prevention, intervention, and rehabilitative strategies can be developed to ameliorate the myriad of behavioral manifestations.
This book brings together some of the best known experts in their fields to offer a cross-disciplinary summary of current research on human memory. More than this however, the book pays tribute to the work of Lars-Göran Nilsson and his many contributions to the psychology of human memory. The book is divided into three subsections: General Issues in Human Memory, Memory and Aging, and Memory and the Brain. These sections represent the three cornerstones in Lars-Göran's scientific career and comprise contributions from senior collaborators, colleagues and former students. Areas of discussion include: long-term and working memory: how do they interact? an epidemiological approach to cognitive health in aging the cognitive neuroscience of signed language Covering a broad range of topics, Memory, Aging and the Brain will be of great interest to all those involved in the study and research of human memory.