期刊
HEARING RESEARCH
卷 238, 期 1-2, 页码 3-11出版社
ELSEVIER
DOI: 10.1016/j.heares.2007.09.011
关键词
lizard; hearing; evolution of hearing; otoacoustic emission; tuning; cochlear prosthesis
The structure of the basilar papilla of the inner ear of lizards is the most diverse among all vertebrates. Research on a variety of lizard ears, animals that are remarkably robust under laboratory conditions, has provided the field of auditory research with valuable information, particularly on the minimum structural requirements for sensitive, selective hearing and on the importance of the tectorial membrane and active processes in this regard. Despite the absence of a tuned basilar membrane, lizard ears produce highly frequency selective hearing through micromechanical tuning of small, resonant hair-cell-tectorial units or of free-standing hair bundles. These units are driven by an active process that also underlies spontaneous and other otoacoustic emissions. Lizard ears provided the first in vivo evidence that the active process is calcium-sensitive and ties within the stereovillar bundles of the hair cells. (C) 2007 Elsevier B.V. All rights reserved.
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