Modeling cochlear two-tone suppression using a system of nonlinear oscillators with feed-forward coupling

被引：1
|
作者：
Ouchi, Masanori [1 ]
Nakao, Hiroya [1 ]
机构：
[1] Tokyo Inst Technol, Dept Syst & Control Engn, Meguro Ku, O Okayama 2-12-1, Tokyo 1528552, Japan
来源：
IEICE NONLINEAR THEORY AND ITS APPLICATIONS | 2019年 / 10卷 / 01期
关键词：
cochlear mechanics; two-tone suppression; coupled oscillators;
D O I：
10.1587/nolta.10.90
中图分类号：
O1 [数学];
学科分类号：
0701 ; 070101 ;
摘要：
Mechanism of two-tone suppression is studied using a coupled-oscillator model of the cochlea with feed-forward coupling. Local amplification of sound signals is modeled by using Stuart-Landau oscillators near the Hopf bifurcation, and transmission of sound signals is described as feed-forward coupling between the oscillators. Effect of suppressor signals on the response to probe signals is analyzed by numerical simulations. It is found that the effect of suppression is qualitatively different depending on relative frequency between probe and suppressor signals. By analyzing a simplified two-oscillator model, we explain the mechanism of the suppression, where configuration of the oscillators plays an essential role.
引用
收藏
页码：90 / 99
页数：10
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