Otoacoustic Emissions: Concepts and Origins.- Traveling Waves, Second Filters, and Physiological Vulnerability: A Short History of the Discovery of Active Processes in Hearing.- Critical Oscillators as Active Elements in Hearing.- Active Hair-Bundle Motility of the Hair Cells of Vestibular and Auditory Organs.- The Morphological Specializations and Electromotility of the Mammalian Outer Hair Cell.- Active Processes in Insect Hearing.- Otoacoustic Emissions in Amphibians, Lepidosaurs, and Archosaurs.- Otoacoustic Emissions: Basic Studies in Mammalian Models.- Mechanisms of Mammalian Otoacoustic Emission.- Cellular and Molecular Mechanisms in the Efferent Control of Cochlear Nonlinearities.- Cochlear Models Incorporating Active Processes.- Relationships Between Otoacoustic and Psychophysical Measures of Cochlear Function.- Otoacoustic Emissions as a Diagnostic Tool in a Clinical Context.- Future Directions in the Study of Active Processes and Otoacoustic Emissions.
