Auditory Brainstem Evoked Responses

An invaluable reference for diagnosing common auditory disorders Written by the foremost authorities in the field, Audiology: Diagnosis presents the basic concepts and essential clinical information for diagnosing auditory disorders, otologic diseases, and vestibular dysfunction. The book provides a thorough review of fundamental principles of diagnosis, including the basic procedures, the anatomy and physiology of the auditory system, imaging techniques, instrumentation, calibration, and more. It also covers the clinical tests essential for assessing the type and degree of hearing loss and for determining the etiological factors underlying the patient's disorder. Chapters address such important topics as ototoxicity and pharmacology in the audiology practice, and utilizing functional brain imaging and radiologic techniques. Highlights: New information on effective methods for neonatal hearing screening, assessment of vestibular disorders, the genetics of hearing loss, and recent advances in testing for auditory processing disorders in children and adults Chapter outlines to rapidly acquaint reader with topics to be discussed Pearls, pitfalls, controversial points, and special considerations providing recommendations and comments on key aspects of patient care Audiology: Diagnosis is one part of a three-volume series, which is completed by Audiology: Treatment and Audiology: Practice Management. Together these books provide audiologists and students in graduate programs with an invaluable resource for each stage of management.

Written by experts with extensive clinical and scientific experience, this comprehensive textbook presents the state of the art in auditory evoked potentials. Opening chapters explain the nature of electrical fields that generate surface recorded potentials, summarize the imaging modalities that complement evoked potential studies, and review acoustics and instrumentation. Major sections examine the anatomy and physiology of the auditory periphery, brainstem, and cortex and the principles and clinical applications of auditory, myogenic, visual, somatosensory, and vestibular evoked potentials. Chapters present hands-on laboratory exercises and clinical case studies. A full-color insert includes 3D images from multi-channel evoked potentials and functional imaging.

Auditory Brainstem Evoked Potentials: Clinical and Research Applications provides a solid foundation of the theoretical principles of auditory evoked potentials. This understanding is important for both the development of optimal clinical test strategies, and interpretation of test results. Developed for graduate-level audiology students, this comprehensive text aims to build a fundamental understanding of auditory evoked brainstem responses (ABR), and their relationship to normal and impaired auditory function, as well as its various audiologic and neurootologic applications. In addition to covering the classical onset ABR, the book provides a thorough review of sustained brainstem responses elicited by complex sounds, including auditory steady state response (ASSR), envelope following response (EFR), and frequency following response (FFR), and the growing clinical and research applications of these responses. By exploring why certain stimulus manipulations are required to answer specific clinical questions, the author provides the resources needed for students and clinicians to make reasoned decisions about the optimal protocol to use in a given situation. Key Features A full chapter devoted to laboratory exercises Numerous illustrations to help explain key concepts Description of neural bases underlying amplitude and latency changes Troubleshooting techniques End-of-chapter summaries A PluralPlus companion website with PowerPoint lecture slides for instructors and case studies for students

Evoked potentials are potentials that are derived from the peripheral or central nervous system. They are time locked with an external stimulus and can be influenced by subjective intentions. Evoked potentials have become increasingly popular for clinical diagnosis over the last few years. Evoked potentials from the visual system are used by ophthalmologists in order to localize the abnormalities in the visual pathway. The otologists are mainly involved in brainstem auditory evoked potentials, while the pediatricians, neonatologists, neurologists and clinical neurophysiologists make use of multimodal stimulation. The psychiatrists and psychologists, generally, examine the slow potentials such as P300 and CNV. Anesthesiologists use short latency somatosensory and visual evoked potentials in order to monitor the effectiveness of the anesthesia. Pharmaco evoked potentials are very promising measures for the quan tification of the effectiveness of drug action on the cerebral cortex. Urologists are more and more involved in pudendal somatosensory evoked potentials and in the intensive care unit evoked potentials are used in order to monitor the functional state of the central nervous system of the patient. This overwhelming number of examinations and exam ina tors clearly demonstrates the need for guidelines and standardization of the methods used. The evoked potential metholody is restricted by the relative poor signal to noise ratio. In many diseases this signal to noise ratio decrease rapidly during the progression of the illness. Optimal technical equipment and methodology are therefore essential.

A compendium of information and resources on auditory evoked potentials that focuses on principles and clinical applications. Chapters reflect state-of-the-art techniques by world recognized authors, all of whom have hands-on experience. Contains case studies, charts, graphs, and a list of key terms. Features chapters on electrocochleography, auditory middle latency response, cognitive auditory response, peripheral hearing loss, applications in newborn and infant auditory brainstem response, and a chapter on brain mapping. Otolaryngologists and audiologists in private practice and educational/hospital settings. A Longwood Professional Book.

This book reviews how we can record the human brain's response to sounds, and how we can use these recordings to assess hearing. These recordings are used in many different clinical situations--the identification of hearing impairment in newborn infants, the detection of tumors on the auditory nerve, the diagnosis of multiple sclerosis. As well they are used to investigate how the brain is able to hear--how we can attend to particular conversations at a cocktail party and ignore others, how we learn to understand the language we are exposed to, why we have difficulty hearing when we grow old. This book is written by a single author with wide experience in all aspects of these recordings. The content is complete in terms of the essentials. The style is clear; equations are absent and figures are multiple. The intent of the book is to make learning enjoyable and meaningful. Allusions are made to fields beyond the ear, and the clinical importance of the phenomena is always considered.