منابع مشابه
The cochlea
Ears have evolved in parallel in vertebrates since a common divergence 300 million years ago. In birds, reptiles and amphibia, the hearing organ is strictly referred to as a papilla. The cochlea is the hearing organ of mammals and consists of a coiled cavity within the temporal bone on either side of the head. It contains the structures that separate the components of a complex sound by frequen...
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...
متن کاملPatterning of the mammalian cochlea.
The mammalian cochlea is sophisticated in its function and highly organized in its structure. Although the anatomy of this sense organ has been well documented, the molecular mechanisms underlying its development have remained elusive. Information generated from mutant and knockout mice in recent years has increased our understanding of cochlear development and physiology. This article discusse...
متن کاملSummating potentials of the cochlea.
DAVIS, HALLOWELL, BRITE H. DEATHERAGE, DONALII H. ELDREDGE AND CATHERINE A. SMITH. Suwzmating potentials of the cochlea. Am. J. Physiol. 195(2): 251-261. 19$X--When the ear is stimulated by a steady tone Scala media and Scala vestibuli become less positive electrically relative to Scala tympani. This ‘summating potential’ (SP) is a d.c. change related to the root-mean-square of the acoustic pre...
متن کاملMode conversion in the cochlea?
It is suggested that the frequency selectivity of the ear may be based on the phenomenon of mode conversion rather than critical layer resonance. The distinction is explained and supporting evidence discussed. PACS numbers: 43.64.Kc, 43.66.Ba
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ژورنال
عنوان ژورنال: Current Biology
سال: 2000
ISSN: 0960-9822
DOI: 10.1016/s0960-9822(00)00457-7