By Geoffrey A. Manley, Richard R. Fay
The cochlea doesn't simply choose up sound, it additionally produces sounds of low depth referred to as Otoacoustic Emissions (OAEs). Sounds produced through fit ears – both spontaneously or in keeping with stimuli - let researchers and clinicians to check listening to and cochlear functionality noninvasively in either animals and people. This ebook provides the 1st severe evaluate of the organic foundation of those otoacoustic emissions.
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Additional info for Active Processes and Otoacoustic Emissions in Hearing
New York: Theime, Chapter 1. Kemp DT, Anderson SD (eds) (1980) Proceedings of the symposium on Active and Nonlinear Mechanical Processes in the Cochlea. Hear Res 2:533–548. Kemp DT, Brown AM (1983a) A comparison of mechanical nonlinearities in the cochleae of man and gerbil from ear canal measurements. In: Klinke R, Hartmann R (eds) Hearing—Physiological Bases and Psychophysics. Berlin: Springer-Verlag, pp. 82–88. Kemp DT, Brown AM (1983b) An integrated view of cochlear mechanical nonlinearities observable from the ear canal.
The London meeting was called to discuss the implications of otoacoustic emissions and other emerging auditory phenomena that suggested an active interaction between physical and biological systems. Use of the term “active process” in this context may well stem from the title of that symposium. , Kim, Molnar, and Rhode) were in the minority at that time, but the tide was already beginning to turn against the conservative view. At that same London meeting, LePage and Johnstone (1980) announced the first observations of nonlinear basilar membrane motion in the guinea pig, a characteristic previously seen only by Rhode (1971) in the squirrel monkey.
Noise) (Collet et al. 1990). These effects are crucially important in understanding functional cochlear homeostasis. The magnitude and time course of OAEs changes resulting from challenges that perturb the resting cochlear state are very unlikely to be determined by spurious characteristic of the OAE generator. They are most likely to reflect characteristics of the homeostatic mechanisms associated with the cochlea. , 150 Hz) tone. This oscillation suggests a second-order control system capable of enhancing OHC activity (Kemp et al.