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

• Ouchi Masanori

  Department of Systems and Control Engineering, Tokyo Institute of Technology

• Nakao Hiroya

  Department of Systems and Control Engineering, Tokyo Institute of Technology

抄録

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.

収録刊行物

• Nonlinear Theory and Its Applications, IEICE

  Nonlinear Theory and Its Applications, IEICE 10 (1), 90-99, 2019

  一般社団法人 電子情報通信学会

キーワード

• cochlear mechanics
• two-tone suppression
• coupled oscillators

詳細情報

• CRID: 1390282763083794944
• NII論文ID: 130007542462
• DOI: 10.1587/nolta.10.90
• ISSN: 21854106
• Web Site: http://t2r2.star.titech.ac.jp/cgi-bin/publicationinfo.cgi?q_publication_content_number=CTT100841734
• Web Site: https://www.jstage.jst.go.jp/article/nolta/10/1/10_90/_pdf
• 本文言語コード: en
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