A group of internationally recognized engineers, basic scientists and clinicians who seek better understanding of how the neurophysiology of the inner ear and related structures of the central nervous system influence hearing and balance have provided this compendium. The underlying goal is to provide an impetus for the development and enhancement of man-made electrical systems that either produce an artificial sense of hearing or the artificial control of standing and locomotion. At the symposium on which this book is based, the authors were given the opportunity to respond to questions immediately, modifying their papers for this volume, thus providing direct peer-reviewing before publication.