منابع مشابه
The Active Traveling Wave in the Cochlea
A sound stimulus entering the inner ear excites a deformation of the basilar membrane which travels along the cochlea towards the apex. It is well established that this wave-like disturbance is amplified by an active system. Recently, it has been proposed that the active system consists of a set of self-tuned critical oscillators which automatically operate at an oscillatory instability. Here, ...
متن کاملActive traveling wave in the cochlea.
A sound stimulus entering the inner ear excites a deformation of the basilar membrane which travels along the cochlea towards the apex. It is well established that this wavelike disturbance is amplified by an active system. Recently, it has been proposed that the active system consists of a set of self-tuned critical oscillators which automatically operate at an oscillatory instability. Here, w...
متن کاملFluid-structure Traveling Wave Filters Based on the Mammalian Cochlea
Micromachined fluid-structure systems capable of acoustic sensing and mechanical frequency analysis are demonstrated. These systems act as passive mechanical acoustic filters. A capacitive sensing scheme is incorporated into the structure to produce 32 channels of filtered output, each sensitive to a particular frequency band. Inspiration for the design is taken from the structure of the mammal...
متن کاملLaser amplification with a twist: traveling-wave propagation and gain functions from throughout the cochlea.
Except at the handful of sites explored by the inverse method, the characteristics-indeed, the very existence-of traveling-wave amplification in the mammalian cochlea remain largely unknown. Uncertainties are especially pronounced in the apex, where mechanical and electrical measurements lack the independent controls necessary for assessing damage to the preparation. At a functional level, the ...
متن کاملThe Active Cochlea
The cochlea is a hydromechanical frequency analyzer located in the inner ear (Fig. 1 a). Its principal role is to perform a realtime spectral decomposition of the acoustic signal in producing a spatial frequency map. The frequency analysis may be understood with the aid of Figure 1 b, which shows a straightened cochlea with a snapshot of its basilar membrane displaced in response to a single-fr...
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ژورنال
عنوان ژورنال: Physical Review Letters
سال: 2003
ISSN: 0031-9007,1079-7114
DOI: 10.1103/physrevlett.90.158101