Download or read book Auditory Temporal Processing and Its Disorders written by Jos J. Eggermont and published by Oxford University Press, USA. This book was released on 2015 with total page 371 pages. Available in PDF, EPUB and Kindle. Book excerpt: 'Auditory temporal processing' determines our understanding of speech, our appreciation of music, our ability to localize a sound source, and even to listen to a person in a noisy crowd. This book reviews the mechanisms for temporal processing in the auditory system, looking at how these underlie specific clinical disorders, and their treatment.

Download or read book The Auditory Cortex written by Jeffery A. Winer and published by Springer Science & Business Media. This book was released on 2010-12-02 with total page 711 pages. Available in PDF, EPUB and Kindle. Book excerpt: There has been substantial progress in understanding the contributions of the auditory forebrain to hearing, sound localization, communication, emotive behavior, and cognition. The Auditory Cortex covers the latest knowledge about the auditory forebrain, including the auditory cortex as well as the medial geniculate body in the thalamus. This book will cover all important aspects of the auditory forebrain organization and function, integrating the auditory thalamus and cortex into a smooth, coherent whole. Volume One covers basic auditory neuroscience. It complements The Auditory Cortex, Volume 2: Integrative Neuroscience, which takes a more applied/clinical perspective.

Download or read book A Model for Temporal Processing in the Auditory System written by Socrates Deligeorges and published by . This book was released on 1996 with total page 170 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Temporal Processing in the Anuran Auditory System written by Gary Joe Rose and published by . This book was released on 1983 with total page 386 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Biophysical Models for Temporal Processing in the Auditory System written by Sanjai Singh and published by . This book was released on 1995 with total page 162 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Auditory Processing Of Temporal Fine Structure Effects Of Age And Hearing Loss written by Brian C J Moore and published by World Scientific. This book was released on 2014-03-12 with total page 197 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book is concerned with changes in the perception of sound that are associated with hearing loss and aging. Hearing loss affects about 7% of the population in developed countries, and the proportion is increasing as the average age of the population increases. The audiogram is the most widely used diagnostic tool in audiology clinics around the world. The audiogram involves measuring the threshold for detecting sounds of different frequencies. Sometimes the audiogram is the only diagnostic tool that is used. However, hearing problems are not completely characterized by the audiogram. Two individuals with similar audiograms may show very different abilities in the detection and discrimination of sounds at above-threshold levels. Also, a person may have hearing difficulties despite having an audiogram that is within the range conventionally considered as ‘normal’. One factor that may influence the discrimination of sounds, especially the ability to understand speech in background sounds, is sensitivity to temporal fine structure (TFS).This monograph reviews the role played by TFS in masking, pitch perception, speech perception, and spatial hearing, and concludes that cues derived from TFS play an important role in all of these. Evidence is reviewed suggesting that cochlear hearing loss reduces the ability to use TFS cues. Also, the ability to use TFS declines with increasing age even when the audiogram remains normal. This provides a new dimension to the changes in hearing associated with aging, a topic that is currently of great interest in view of the increasing proportion of older people in the population.The study of the role of TFS in auditory processing has been a hot topic in recent years. While there have been many research papers on this topic in specialized journals, there has been no overall review that pulls together the different research findings and presents and interprets them within a coherent framework. This monograph fills this gap.

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 Neural Mechanisms of Temporal Processing in the Central Auditory System A Theory of Gap Detection written by Jennifer F. Linden and published by . This book was released on 2019 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Auditory Biomimetics written by Socrates George Deligeorges and published by . This book was released on 2004 with total page 628 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Auditory Information Processing written by Harunori Ohmori and published by Springer Nature. This book was released on 2019-11-26 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book explains neural function at the level of ion channels and membrane excitability in neurons along the ascending auditory pathway. Airborne sound information is captured by the ears, transformed to neural electrical signals, and then processed in the brain. Readers will find full descriptions of these processes of signal transduction and transformation. First, it is described how, at the level of hair cells, the receptor cells in the cochlea, the sound-evoked vibration is transduced to electrical signals and transmitted to the auditory nerve fibers. In the second section it is explained how the electrical activity of these fibers is processed at the cochlear nucleus in order to extract the temporal and level information of sound separately and then transmitted to the third nucleus for processing of the interaural differences, such as the interaural time difference and the interaural level difference. The third section summarizes the transformation of auditory temporal information to the rate of neural firing activity in the midbrain and the higher nuclei, including the cortex, based on in vivo results. Finally, emerging new technologies to investigate auditory signal processing are reviewed and discussed.

Download or read book Temporal Processing in Primate Auditory Cortex written by Daniel Bendor and published by LAP Lambert Academic Publishing. This book was released on 2011-03 with total page 184 pages. Available in PDF, EPUB and Kindle. Book excerpt: A cornerstone of the human auditory system is its ability to recognize and appreciate music and speech. At its most basic level, music is made up of melodies and rhythms, which are the relative changes in pitch and temporal rates, respectively, for a series of musical notes. Speech is also composed of sequences of different pitches and temporal rates, however pitch changes carry prosody information (for non-tonal languages), while semantic information in contained in the temporal rate. How is an acoustic signal's temporal rate and pitch encoded in the auditory system? For my dissertation, I have investigated the neural coding of a sound's temporal properties by single neurons in the auditory cortex of the marmoset.

Download or read book Time Resolution in Auditory Systems written by Axel Michelsen and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 252 pages. Available in PDF, EPUB and Kindle. Book excerpt: Many books from symposia describe the current status in well established fields of research, where much is known and where the loose ends are only details in the picture. The topic dealt with here does not fall into this pattern. The study of time as a parameter in its own right is difficult, and the loose ends tend to do minate the present picture. Although the book does provide the reader with an overview of the field, its main value is probably to act as a source of "food for thought" for those interested in the function of sense organs and nervous systems as substrates for behaviour. The Introduction is intended to provide the readers of the book with a short guide to the topiCS discussed in the different chapters. The rather detailed Index may help those looking for information on specific topiCS. The Index also explains most of the abbreviations used in the book. The basic idea of the Danavox symposia is to invite a small group of experts to discuss a rather narrow theme in sound communication. The small number of active par tiCipants has the advantage of encouraging intense dis cussions and of avoiding overloading the program. On the other hand, selecting the partiCipants is difficult.

Download or read book Temporal Processing in the Auditory System written by Donald Allen Robin and published by . This book was released on 1984 with total page 416 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Hearing From Sensory Processing to Perception written by B. Kollmeier and published by Springer Science & Business Media. This book was released on 2007-09-21 with total page 554 pages. Available in PDF, EPUB and Kindle. Book excerpt: Hearing – From Sensory Processing to Perception presents the papers of the latest "International Symposium on Hearing," a meeting held every three years focusing on psychoacoustics and the research of the physiological mechanisms underlying auditory perception. The proceedings provide an up-to-date report on the status of the field of research into hearing and auditory functions.

Download or read book Profiling of Temporal Processing and Speech Perception Abilities written by Sangamanatha Ankmnal Veeranna and published by LAP Lambert Academic Publishing. This book was released on 2011-01 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt: An important property of sound is its variation as a function of time.This variation of acoustic properties overtime is important in analyzing the "meaning" of a sound.In spite of its perceptual importance, much is still unknown of how temporal information is analyzed and represented in the auditory system. Normal temporal processing is important for us to be able to understand speech in quiet and in background noise. Decline in the temporal processing abilities specifically gap detection in noise with the age is well documented in the literature. However, less attention has been paid to effect of age on other temporal process and its relation to speech perception. The present study was undertaken to document effect of age on different temporal process in normal hearing listeners from 17-70 years of age.Temporal processes that were measured were modulation detection, backward masking, duration discrimination, duration pattern and gap detection.Apart from this speech perception in noise and speech perception with vocoded signal was also measured. Results showed a systematic age related decline temporal processing and speech perception abilities.

Download or read book Age related Changes in Auditory Temporal Processing written by Jacqueline Alexandra Overton and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Age-related hearing loss (ARHL) is the third most prevalent cause of disability in adults over age 65. However, we still do not have an adequate understanding of the mechanisms underlying ARHL. The primary complaint of those with ARHL is a difficulty comprehending speech, particularly in challenging listening environments. This can lead to social isolation, depression and contribute to cognitive decline. Importantly, impairments in speech processing and comprehension occur even in the absence of measurable changes in hearing thresholds. Similarly, speech comprehension difficulties are often not corrected with hearing aids. Understanding age-related changes in temporal processing in the central auditory system is critical to understanding the neural mechanisms of speech processing deficits associated with ARHL. This is the central question of my thesis.There are five chapters in this dissertation. In Chapter 1, I introduce the thesis with an overview of ARHL, and a review of the literature covering age related changes in speech and temporal processing, and age-related changes in the central auditory pathway. In Chapter 2, I present single-unit electrophysiology data recorded from primary auditory cortex (A1) in older rhesus macaque monkeys in response to amplitude modulated (AM) broadband noise presented across a range of modulation frequencies, and compare those data with the results from younger monkeys reported previously in Yin and colleagues (2011). This was the first study of age-related changes in cortical auditory temporal processing in the macaque. I found that neurons from older monkeys show dramatic changes in their responses to AM noise as measured by their ability to phase-lock to the envelope and by their overall firing rate. Several measures of tuning were correlated in young monkeys, but these relationships were either reversed, or lost in units from older monkeys. Underlying these changes was a decrease in the ability of older neurons to phase-lock to the envelope of an AM stimulus, and dramatically increased spontaneous and evoked firing rates (replicated from previous studies). These data, however, were collected under passive stimulus presentation conditions, so it is unclear how these changes affect the ability to accurately represent the stimulus. The logical follow-up to the study presented in Chapter 2, is to record from single units in macaque A1 while they are performing a task that requires them to attend to and make decisions regarding a specific attribute of the AM stimulus (in this case modulation frequency). I, therefore, designed a two-alternative forced choice (2AFC) AM frequency discrimination task for this purpose. How modulation frequency discrimination ability may change with age had not been tested previously. Hence, in Chapter 3, I present psychophysical data from a cross-sectional sample of 33 human participants ranging in age from 25 to 80 years, and compare those data to results from one 16-year old macaque. I found an age-related decline in AM frequency discrimination at the highest AM frequencies measured, but no age-related difference in performance at lower frequencies. Importantly, age-related changes in discrimination ability were not related to hearing thresholds, further supporting that age-related temporal processing deficits are due to changes in the central auditory system independent of peripheral changes. Comparison to monkey data showed that human subjects’ discrimination ability was more acute overall, and extended to temporal frequencies beyond the monkey’s upper limit of AM frequency discrimination. This result suggests a perceptual specialization in humans for fine changes in temporal frequency that is likely to be relevant to speech processing. This section of the thesis is concluded in Chapter 4, where I discuss the implications of results presented in the previous two chapters in the context of the introductory chapter, and offer directions for future research. Cranial implants are a necessary component of neurophysiological investigation of nonhuman primates. In Chapter 5, I present a methodology for implanting nonhuman primates with custom-fitted acrylic-free headposts and recording cylinders using biocompatible materials. Each titanium headpost was hand-form to fit a 3D-printed replica of the animal’s skull, which was created from CT data. I provide a timeline and detail each step of the process, including information for converting DICOM data to a 3D-printable format. Furthermore, I discuss issues of biocompatibility of materials, and suggest procedures for promoting osseointegration of titanium implants. Overall, these methods have proven to reduce implant surgery times up to 70%. All implanted headposts remained intact and free of infection for the experimental life of each animal (four years and counting).

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