The concept of the “Soundscapes� includes all of the sounds in one’s environment and focuses not only on the sounds itself. Instead, it focuses on the interrelationships between person and activity and place, both in space and time. Soundscape also include influences on the acoustic environment through auditory sensation, its interpretation, and the responses to the acoustic environment in context. The conceptual framework of Soundscape describes the “process of perceiving or experiencing and/or understanding an acoustic environment, highlighting general concepts and their relationships: context, sound sources, acoustic environment, auditory sensation, interpretation of auditory sensation, responses, and outcomes� (International Organization for Standardization, ISO 12913-1:2014 Acoustics Soundscape Part Definition and Conceptual Framework, ISO, Geneva, 2014). With soundscape, one achieves a deeper understanding of acoustic environment and its effects on people.  The ISO standard 12931-1 on soundscape provides an important, and rigorous, distinction in the use of “Soundscape.� But, it is recognizable that some individuals, particularly planners, designers, lay persons, and even those primarily interested in management of the acoustic environment through environmental noise control, will find it convenient to use “Soundscape� as a synonym for the physical acoustic environment. When it comes to noise management and urban planning, soundscape research has the potential to promote healthy urban environments by sharing and incorporating the significant knowledge of all concerned parties. Understandably, this shows that the communication with regard to noise management has to be forced to guarantee that the specifics of Soundscapes (i.e., the relevance of perception) are seriously considered alongside the whole. This book will bridge the gap between soundscape theory and practice and therefore it   will be different from our earlier publications as “Soundscape and the built environment� (ed. by J. Kang and B. Schulte-Fortkamp CRC Press, Taylor and Francis Group, Boca Raton, Fl  2016) and also from the respective Special Issues on Soundscapes  in 2012 in The Journal of the Acoustical Society of America (ed. by B. Schulte-Fortkamp and J. Kang), and also the Special Issue in Acta Acustica 2006 *(ed. by B. Schulte-Fortkamp and D. Dubois), and the E-book on soundscape  This volume will be driven by the difficult process of standardization of Soundscape and its evaluation procedures. The main goal of the proposed volume is to present and review the developments in Soundscape, reflecting the standardization procedure and the diverse inputs.   the needs in management and planning in urban acoustic environments, the book will also focus on the difficulties, as well as the solutions, in interdisciplinary grounded communication, that is, on the one hand, related to science, but on the other to application, that needs guidance.

This volume provides a detailed update on progress in the field of hair cell regeneration. This topic is of considerable interest to academicians, clinicians, and commercial entities, including students of auditory and vestibular neuroscience, audiologists, otologists, and industry, all of whom may have interest in hair cell regeneration as a potential future therapy for hearing and balance dysfunction.  In 2008, Springer published a SHAR volume on this subject (Hair Cell Regeneration, Repair, and Protection, Editors Richard Salvi and Richard Fay).  Since that time, there has been considerable advancement in this field.This book provides a historical perspective on the field, but the emphasis is on more "prospective" views of the various facets of regeneration research, in the hope that the volume will stimulate new projects and approaches, focusing on the limitations of current knowledge and describing promising strategies for future work. The book will include the following key features of hair cell regeneration: • Cellular and molecular control hair cell regeneration in non-mammalian species (in particular zebrafish and chickens) • Our current understanding of the capacity for hair cell replacement in mammals (rodents and humans).   • Signals controlling pro-regenerative behaviors in supporting cells, the hair cell progenitors.  • New techniques that have been applied to study the genetic and epigenetic regulation of hair cell regeneration in mammals and non-mammals.  • Contributions of stem cells toward building new tools to explore how hair cell regeneration is controlled and toward developing cells and tissue for therapeutic transplantation. •  Studies that have applied gene and drug therapy to promote regeneration in mammals.

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.

This volume focuses on the history of research on hearing from comparative approaches.  Each chapters examines the most formative studies that led to current understanding of hearing across taxa and still influence hearing research in general.  Much of the early work on hearing, which goes back to Aristotle, as well as the classic work of 16th to early 20th century scientists (e.g., Spellanzani, Retzius, Ramón y Cajal, and Helmholtz) is not well known to modern investigators.  Similarly, work in the first 75 years of the 20th century is also unknown or, in some cases, dismissed because it is “old.�   Much of the earlier work describes research approaches and results fundamental to our understanding of hearing as well as the beauty of observation and synthesis. The pioneering work on hearing contains ideas and questions that are still germane today. Thus, the goal of this volume is to introduce, review, and put into perspective, older but exemplary, extraordinary studies by investigators that form the basis of our knowledge as well as questions being asked today. Each chapter includes the first significant observations and approaches to hearing in the taxa and/or hearing type that is the focus of the chapter with some of the most important earlier papers discussed in some detail, including the theories, formative experiments, results, and conclusions.  Each chapter provides briefer notations and citations of additional important papers that are outgrowths of the founding research – or correlate and even reverse the original works.   This volume is a departure from the classic approach established for the SHAR books in which the focus has been on a single topic, and on the most recent and exciting discoveries.  One difference in this volume from past SHAR volumes is that we have a more  coordinated approach for the chapters to ensure that this volume is, indeed, a documentation of hearing research history, not a review of the latest status of the topic.  A second difference is that the focus of the volume is on the historical value of studies.  In that sense, the volume maintains the tutorial value for which SHAR books are famous, but it explores the ancestry of modern research in order to help new researchers to gain perspective on important questions and on fundamental information they may not fully appreciate – to their loss.  Our interest in doing this volume comes from phenomena familiar to most senior investigators - that younger investigators often have little or no sense of the history of their discipline, and they often do not know that their “hot� new idea was not only pursued, and often solved, but further that it was solved in an elegant way.  We believe it is important to bring the methodologies and discoveries on hearing done before the advent of the internet to light, for the benefit and growth of new research. In deciding on the chapter divisions for this book, we considered a number of different organizational schemes, and particularly using as a focus methodological approaches (e.g., psychoacoustics, low to high frequency types, physiology, anatomy). However, we came to the conclusion that most investigators tend to be more focused on working within a particular taxonomic group, settling on particular taxa, in many cases driven by the special hearing abilities.  We also concluded that that this approach is more naturally related to the  evolution not only of hearing, but also to the evolution of ideas, as much of hearing science was part of the “natural philosopher� approach that was a core element of historical discoveries.

Since the first edition of the Aging Auditory System volume (in 2009), there has been a tremendous amount of research in basic, translational, and clinical sciences related to age-related changes in auditory system structure and function. The new research has been driven by technical and conceptual advances in auditory neuroscience at multiple levels ranging from cells to cognition. The chapters in Aging and Hearing: Causes and Consequences span a broad range of topics and appeal to a relatively wide audience. Our goal in this volume is to put together state-of-the-art discussions about new developments in aging research that will appeal to a broad audience, serving as an important update on the current state of research on the aging auditory system. This update includes not only the recent research, but also consideration of how human and animal studies or translational and basic research are working in tandem to advance the field. This new edition is a natural complement to the previous SHAR volume on the aging auditory system edited by Gordon-Salant, Frisina, Popper, and Fay. The target audience for this volume will be graduate students, researchers, and academic faculty from a range of disciplines (psychology, hearing science/audiology, physiology, neuroscience, engineering). It also will appeal to clinical audiologists as well as to researchers working in the hearing device industry. Individuals who attend conferences sponsored by the Association for Research in Otolaryngology, Acoustical Society of America, Auditory Cognitive Neuroscience Society, American Auditory Society, Society for Neuroscience, American Speech, Language and Hearing Association, and the American Academy of Audiology (among others) are likely to find value in the volume.

By far, the most widely used subjects in psychological and biological research today are rodents. Although rats and mice comprise the largest group of animals used in research, there are over 2,000 species and 27 families of rodents, living all over the world (except Antarctica) and thriving in many different habitat types. The vast environmental diversity that rodents face has led to numerous adaptations for communication, including vocalizing and hearing in both the sonic and ultrasonic ranges, effectively communicating in the open air and underground, and using vocalizations for coordinating sexual behavior, for mother-pup interactions, and for signaling an alarming situation to the group. Some rodent species have even developed foot drumming behaviors for communication. Comparative studies from around the globe, using both field and laboratory methodologies, reveal the vast differences in acoustic communication behavior across many rodent species. Some rodents are amenable to training and have been domesticated and bred purely for research purposes. Since the early 1900s, rats and mice have been indispensable to research programs around the world. Thus, much of what we know about hearing and vocalizations in rodents come from these two species tested in the laboratory. The sequencing of the mouse genome in 2002, followed by the rat genome in 2004, only increased the utility of these animals as research subjects since genetically engineered strains mimicking human diseases and disorders could be developed more easily. In the laboratory, rats and mice are used as models for human communication and hearing disorders and are involved in studies on hearing loss and prevention, hormones, and auditory plasticity, to name a few. We know that certain strains of mice retain hearing better than others throughout their lifespan, and about the genes involved in those differences. We know about the effects of noise, hormones, sex, aging, and circadian rhythms on hearing in mice and other rodents. We also know about normal hearing in many families of rodents, including the perception of simple and complex stimuli and the anatomy and physiology of hearing and sound localization. The importance of acoustic communication to these animals, as well as the significance of these mammals to biomedical research, are summarized in the chapters.

Over the past several years, many investigators interested in the effects of man-made sounds on animals have come to realize that there is much to gain from studying the broader literature on hearing sound and the effects of sound as well as data from the effects on humans. It has also become clear that knowledge of the effects of sound on one group of animals (e.g., birds or frogs) can guide studies on other groups (e.g., marine mammals or fishes) and that a review of all such studies together would be very useful to get a better understanding of the general principles and underlying cochlear and cognitive mechanisms that explain damage, disturbance, and deterrence across taxa. The purpose of this volume, then, is to provide a comprehensive review of the effects of man-made sounds on animals, with the goal of fulfilling two major needs. First, it was thought to be important to bring together data on sound and bioacoustics that have implications across all taxa (including humans) so that such information is generally available to the community of scholars interested in the effects of sound. This is done in Chaps. 2-5. Second, in Chaps. 6-10, the volume brings together what is known about the effects of sound on diverse vertebrate taxa so that investigators with interests in specific groups can learn from the data and experimental approaches from other species. Put another way, having an overview of the similarities and discrepancies among various animal groups and insight into the "how and why" will benefit the overall conceptual understanding, applications in society, and all future research.

This book reviews the growing literature that is consistent with the hypothesis that hormones can regulate auditory physiology and perception across a broad range of animal taxa, including humans. Understanding how hormones modulate auditory function has far reaching implications for advancing our knowledge in the basic biomedical sciences and in understanding the evolution of acoustic communication systems. A fundamental goal of neuroscience is to understand how hormones modulate neural circuits and behavior. For example, steroids such as estrogens and androgens are well-known regulators of vocal motor behaviors used during social acoustic communication. Recent studies have shown that these same hormones can also greatly influence the reception of social acoustic signals, leading to the more efficient exchange of acoustic information.

Presents a comprehensive review of nonhuman primate audition and vocal communication. These are obviously intimately related topics, but are often addressed separately. The hearing abilities of primates have been tested experimentally in a large number of species across the primate order, and these studies have revealed both consistent patterns as well as interesting variation within and between taxonomic groups. Recent studies have shed light on how variation in anatomical structures along the auditory pathway relates to variation in auditory sensitivity. At the same time, ongoing studies of vocal communication in wild primate populations continue to reveal new insights into the social and environmental contexts of many primate calls, and the range of known primate vocalizations has increased dramatically with the development of more sophisticated and accessible auditory equipment and software that enables the recording and analysis of higher-fidelity and broader-band recordings, including documenting very high frequency (i.e. ultrasound) vocalizations. Historically the relative importance of primate calls has been evaluated qualitatively by the perception of the researcher, but new methods and approaches now enable a greater appreciation for how signals are used and perceived by the primates in question. The integration of anatomical and behavioral data on acoustic communication and the environmental correlates thereof has significant potential for reconstructing behavior in the fossil record. This confluence of factors and accumulating evidence for the sophistication and complexity in both the signal and its interpretation indicate that a book synthesizing this information across primates is warranted and represents an important contribution to the literature.

Insect Hearing provides a broadly based view of the functions, mechanisms, and evolution of hearing in insects. With a single exception, the chapters focus on problems of hearing and their solutions, rather than being focused on particular taxa. The exception, hearing in Drosophila, is justified because, due to its ever growing toolbox of genetic and optical techniques, Drosophila is rapidly becoming one of the most important model systems in neurobiology, including the neurobiology of hearing. Auditory systems, whether insectan or vertebrate, must perform a number of basic tasks: capturing mechanical stimuli and transducing these into neural activity, representing the timing and frequency of sound signals, distinguishing between behaviorally relevant signals and other sounds and localizing sound sources. Studying how these are accomplished in insects offers a valuable comparative view that helps to reveal general principles of auditory function.

Auditory behavior, perception, and cognition are all shaped by information from other sensory systems. This volume examines this multi-sensory view of auditory function at levels of analysis ranging from the single neuron to neuroimaging in human clinical populations. Visual Influence on Auditory Perception Adrian K.C. Lee and Mark T. Wallace Cue Combination within a Bayesian Framework David Alais and David Burr Toward a Model of Auditory-Visual Speech Intelligibility Ken W. Grant and Joshua G. W. Bernstein An Object-based Interpretation of Audiovisual Processing Adrian K.C. Lee, Ross K. Maddox, and Jennifer K. Bizley Hearing in a "Moving" Visual World: Coordinate Transformations Along the Auditory Pathway Shawn M. Willett, Jennifer M. Groh, Ross K. Maddox Multisensory Processing in the Auditory Cortex Andrew J. King, Amy Hammond-Kenny, Fernando R. Nodal Audiovisual Integration in the Primate Prefrontal Cortex Bethany Plakke and Lizabeth M. Romanski Using Multisensory Integration to Understand Human Auditory Cortex Michael S. Beauchamp Combining Voice and Face Content in the Primate Temporal Lobe Catherine Perrodin and Christopher I. Petkov Neural Network Dynamics and Audiovisual Integration Julian Keil and Daniel Senkowski Cross-Modal Learning in the Auditory System Patrick Bruns and Brigitte Roeder Multisensory Processing Differences in Individuals with Autism Spectrum Disorder Sarah H. Baum Miller, Mark T. Wallace Adrian K.C. Lee is Associate Professor in the Department of Speech & Hearing Sciences and the Institute for Learning and Brain Sciences at the University of Washington, Seattle Mark T. Wallace is the Louise B McGavock Endowed Chair and Professor in the Departments of Hearing and Speech Sciences, Psychiatry, Psychology and Director of the Vanderbilt Brain Institute at Vanderbilt University, Nashville Allison B. Coffin is Associate Professor in the Department of Integrative Physiology and Neuroscience at Washington State University, Vancouver, WA Arthur N. Popper is Professor Emeritus and research professor in the Department of Biology at the University of Maryland, College Park Richard R. Fay is Distinguished Research Professor of Psychology at Loyola University, Chicago

This SHAR volume serves to expand, supplement, and update the original "Cochlea" volume in the series. The book aims to highlight the power of diverse modern approaches in cochlear research by focusing on advances in those fields over the last two decades. It also provides insights into where cochlear research is going, including new hearing prostheses for the deaf that will most likely soon enter the phase of clinical trials. The book will appeal to a broad, interdisciplinary readership, including neuroscientists and clinicians in addition to the more specific auditory community.

The middle ear plays a vital role in the sense and sensitivity of hearing. Of the various characteristics that distinguish mammals from other vertebrates, several pertain specifically to the middle-ear system, such as the presence of three middle-ear bones and the four-layer composite structure of the tympanic membrane. The Middle Ear attempts to elucidate the role this system plays in sound transmission, as viewed from both scientific and clinical perspectives.

The evolution of vertebrate hearing is of considerable interest in the hearing community. However, there has never been a volume that has focused on the paleontological evidence for the evolution of hearing and the ear, especially from the perspective of some of the leading paleontologists and evolutionary biologists in the world. Thus, this volume is totally unique, and takes a perspective that has never been taken before. It brings to the fore some of the most recent discoveries among fossil taxa, which have demonstrated the sort of detailed information that can be derived from the fossil record, illuminating the evolutionary pathways this sensory system has taken and the diversity it had achieved.

The hearing organs of non-mammals, which show quite large and systematic differences to each other and to those of mammals, provide an invaluable basis for comparisons of structure and function. By taking advantage of the vast diversity of possible study organisms provided by the "library" that is biological diversity, it is possible to learn how complex functions are realized in the inner ear through the evolution of specific structural, cellular and molecular configurations. Insights from Comparative Hearing Research brings together some of the most exciting comparative research on hearing and shows how this work has profoundly impacted our understanding of hearing in all vertebrates.

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.

The aim is to provide students and researchers in auditory science and aging with a understanding of the various effects of aging on the auditory system.

Contents:

• Introduction and Overview Sandra Gordon-Salant and Robert D. Frisina
• The Physiology of Cochlear Presbyacusis Richard A. Schmiedt
• The Cell Biology and Physiology of the Aging Central Auditory Pathway Barbara Canlon, Robert Benjamin Illing, and Joseph Walton
  
• Closing the Gap between Neurobiology and Human Presbycusis: Behavioral and Evoked Potential Studies of Age-related Hearing Loss in Animal Models and in Humans James R. Ison, Kelly L. Tremblay, and Paul D. Allen
• Behavioral Studies with Aging Humans: Hearing Sensitivity and Psychoacoustics Peter J. Fitzgibbons and Sandra Gordon-Salant.
• Binaural Processing and Auditory Asymmetries David A. Eddins and Joseph W. Hall III

• The Effects of Senescent Changes in Audition and Cognition on Spoken Language Comprehension Bruce A. Schneider, Kathy Pichora-Fuller, and Meredyth Daneman
• Factors Affecting Speech Understanding in Older Adults Larry E. Humes and Judy R. Dubno
• Epidemiology of Age-related Hearing Impairment Karen J. Cruickshanks, Weihai Zhan, and Wenjun Zhong
• Interventions and Future Therapies: Lessons from Animal Models James F. Willott and Jochen Schacht

Sandra Gordon-Salant is Professor and Director of the Doctoral Program in Clinical Audiology in the Department of Hearing and Speech Sciences at the University of Maryland, College Park. Robert D. Frisina is Professor of Otolaryngology, Neurobiology & Anatomy, and Biomedical Engineering, and Associate Chair of Otolaryngology at the University of Rochester Medical School. Arthur N. Popper is Professor in the Department of Biology and Co-Director of the Center for Comparative and Evolutionary Biology of Hearing at the University of Maryland, College Park. Richard R. Fay is Director of the Parmly Hearing Institute and Professor of Psychology at Loyola University of Chicago.

About the series:

The Springer Handbook of Auditory Research presents a series of synthetic reviews of fundamental topics dealing with auditory systems. Each volume is independent and authoritative; taken as a set, this series is the definitive resource in the field.

Translational Research is the interface between basic science and human clinical application, including the entire process from animal studies to human clinical trials (phases I, II, and III). Translational Research moves promising basic science results from the laboratory to bedside application. Yet, this transition is often the least-defined, least-understood part of the research process. Most scientific training programs provide little or no systematic introduction to the issues, challenges, and obstacles that prevent effective research translation, even though these are the key steps that enable high-impact basic science to ultimately result in significant clinical advances that improve patient outcome. This volume will provide an overview of key issues in translation of research from "bedside to bench to bedside", not only from the perspective of the key funding agencies, but also from the scientists and clinicians who are currently involved in the translational research process. It will attempt to offer insight into real-world experience with intellectual property and technology transfer activities that can help move auditory technologies ahead, as scientists and clinicians typically have little or no formal training in these areas. Translational Research in Audiology and the Hearing Sciences will be aimed at graduate students and postdoctoral investigators, as well as professionals and academics. It is intended to function as a high-profile and up-to-date reference work on Translational Research in the auditory sciences, emphasizing research programs in the traditional areas including drugs and devices, as well as less traditional, still emerging, areas such as sensorineural hearing loss, auditory processing disorder, cochlear implants and hearing aids, and tinnitus therapies.

Electroreception has become one of the most revealing areas in the study of the neural basis of behavior, and neurobiologists recognize it as a model sensory system for experimental study. Through studies of electroreception, researchers have gained extensive knowledge about a complete sensory system, from molecular biology to computation, communication, and behavior. The book Electroreception will examine the behavior, structure, and function of the electrosensory systems of fish and other vertebrates. As a comprehensive volume on the subject, the book will serve as both an introduction to the study of electroreception and a reference and review volume for researchers in related fields.

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.

Efferent sensory systems have emerged as major components of processing by the central nervous system. Whereas the afferent sensory systems bring environmental information into the brain, efferent systems function to monitor, sharpen, and attend selectively to certain stimuli while ignoring others. This ability of the brain to implement these functions enables the organism to make fine discriminations and to respond appropriately to environmental conditions so that survival is enhanced. Our focus will be on auditory and vestibular efferents, topics linked together by the inner ear connection.

The biological utility of the efferent system is striking. How it functions is less well understood, and with each new discovery, more questions arise. The book that is proposed here reflects our vision to share what is known on the topic by authors who actually have made the observations.

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.

The function of vertebrate hearing is served by a surprising variety of sensory structures in the different groups of fish, amphibians, reptiles, birds, and mammals. This book discusses the origin, specialization, and functional properties of sensory hair cells, beginning with environmental constraints on acoustic systems and addressing in detail the evolutionary history behind modern structure and function in the vertebrate ear. Taking a comparative approach, chapters are devoted to each of the vertebrate groups, outlining the transition to land existence and the further parallel and independent adaptations of amniotic groups living in air. The volume explores in depth the specific properties of hair cells that allowed them to become sensitive to sound and capable of analyzing sounds into their respective frequency components. Evolution of the Vertebrate Auditory System is directed to a broad audience of biologists and clinicians, from the level of advanced undergraduate students to professionals interested in learning more about the evolution, structure, and function of the ear.

The Springer Handbook of Auditory Research presents a series of compreh- sive and synthetic reviews of the fundamental topics in modern auditory - search. The volumes are aimed at all individuals with interests in hearing research including advanced graduate students, postdoctoral 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 ?elds 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 peer-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 beginning to develop. New research areas will be covered on a timely basis in the series as they begin to mature.

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.

The auditory system has a remarkable ability to adjust to an ever-changing environment. The six review chapters that comprise Plasticity of the Central Auditory System cover a spectrum of issues concerning this ability to adapt, defined by the widely applicable term "plasticity." With chapters focusing on the development of the cochlear nucleus, the mammalian superior olivary complex, plasticity in binaural hearing, plasticity in the auditory cortex, neural plasticity in bird songs, and plasticity in the insect auditory system, this volume represents much of the most current research in this field. The volume is thorough enough to stand alone, but is closely related a previous SHAR volume, Development of the Auditory System (Volume 9) by Rubel, Popper, and Fay. The book fully addresses the difficulties, challenges, and complexities of this topic as it applies to the auditory development of a wide variety of species.