An optimal determination of electric stimulating waveform for cochlear implant devices

2017 Fiscal Year Final Research Report

• Project/Area Number: 15K01397
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Rehabilitation science/Welfare engineering
• Research Institution: Kanto Gakuin University
• Principal Investigator: Mino Hiroyuki 関東学院大学, 理工学部, 教授 (50190715)
• Project Period (FY): 2015-04-01 – 2018-03-31
• Keywords: 聴覚神経補綴 / 不規則点過程 / 聴神経線維モデル / 計算機シミュレーション / 最大尤度推定 / von Mises分布

Outline of Final Research Achievements

In the present project, it is investigated whether or not the spike trains in response to acoustic stimuli of inner hair cells or electric stimuli of sinusoidally amplitude-modulated pulsatile waveform can be represented by a self-exciting point process (SEPP) of the von Mises type through computer simulations using physiologically realistic auditory nerve fiber model. The uniform-scores test was carried out to assess the validity of determining an electric stimulating waveform in terms of matching period histograms of acoustic and electric stimuli via the von Mises parameters of SEPPs. It is concluded that the electric stimulating waveform designed on the basis of the present project may play a key role in improving the performance of cochlear implant devices.

Free Research Field

人間医工学、神経情報学