Analysis of vibrational characteristics of human middleear by means of measurement of human tympanic membrane vibration with a goal of application to medical treatments

2015 Fiscal Year Final Research Report

• Project/Area Number: 25420186
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Dynamics/Control
• Research Institution: Tottori University
• Principal Investigator: ARII Shiro 鳥取大学, 工学(系)研究科(研究院), 准教授 (80222751)
• Co-Investigator(Kenkyū-buntansha): HASWGAWA Kensaku 日本医科大学, 医学部, 教授 (60252847) ; KATAOKA Hideyuki 鳥取大学, 医学部, 教授 (00224436) ; KITANO Hiroya 鳥取大学, 医学部, 理事 (20153108)
• Project Period (FY): 2013-04-01 – 2016-03-31
• Keywords: 機械力学・制御 / 生物・生体工学 / シミュレーション工学

Outline of Final Research Achievements

In order to elucidate vibrational characteristics of human middleear, a simulation model of tympanic membrane and auditory ossicles is constructed considering mechanical characteristics of muscles tensor tympani and muscles of auditory ossicles. Sound-induced vibration of tympanic membrane and auditory ossicles was measured in volunteers. The responses of the simulation model agree qualitatively with the experimental results. The auditory ossicles vibrate with the same frequency as that of applied sound pressure with stimuli up to 10 kHz. The sound pressure transmitted to cochlea is analyzed by using the simulation model, and the influence of the mechanical characteristics of the muscles on the transmitted sound pressure is considered.

Free Research Field

機械力学・制御