哺乳动物耳蜗中频率调谐与空间调谐曲线之间的关系。

Relationships between frequency-tuning and spatial-tuning curves in the mammalian cochlea.

作者信息

Geisler C D, Cai Y

机构信息

Departments of Neurophysiology and of Electrical and Computer Engineering, University of Wisconsin-Madison 53706, USA.

出版信息

J Acoust Soc Am. 1996 Mar;99(3):1550-5. doi: 10.1121/1.414731.

DOI:10.1121/1.414731

PMID:8819851

Abstract

The tuning curve of a single auditory-nerve fiber is a measure of the intensity levels producing that fiber's threshold response at each of a number of frequencies. For many purposes it is desirable to know cochlear responses as a function of cochlear location (spatial distance from the stapes). Using assumptions of uniformity, the relationships between auditory-nerve-fiber frequency-tuning curves, basilar-membrane frequency-response curves, and basilar-membrane spatial-response curves are obtained. From the spatial-response characteristics which are then inferred from neural frequency-tuning curves, it appears that the tuning properties of the apical cochlea are fairly uniform and differ from the tuning properties of the basal cochlea.

摘要

单一听觉神经纤维的调谐曲线是对多个频率下产生该纤维阈值响应的强度水平的一种度量。出于多种目的，了解耳蜗响应随耳蜗位置（距镫骨的空间距离）的函数关系是很有必要的。利用均匀性假设，可得出听觉神经纤维频率调谐曲线、基底膜频率响应曲线和基底膜空间响应曲线之间的关系。从随后从神经频率调谐曲线推断出的空间响应特性来看，耳蜗顶部的调谐特性相当均匀，与耳蜗底部的调谐特性不同。