Measurement of Deep Brain Signal Using Electrode with High-speed Switching Voltage Divider

2015 Fiscal Year Final Research Report

• Project/Area Number: 25282137
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Partial Multi-year Fund
• Section: 一般
• Research Field: Biomedical engineering/Biomaterial science and engineering
• Research Institution: Ritsumeikan University
• Principal Investigator: Makikawa Masaaki 立命館大学, 理工学部, 教授 (70157163)
• Co-Investigator(Kenkyū-buntansha): SHIOZAWA Naruhiro 立命館大学, スポーツ健康科学部, 准教授 (30411250) ; OKADA Shima 近畿大学, 理工学部, 講師 (40551560)
• Project Period (FY): 2013-04-01 – 2016-03-31
• Keywords: 生体内電気信号 / 電極 / 分圧抵抗 / 高速スイッチング / 脳波 / 心電図 / インナーマッスル / 信号源位置推定

Outline of Final Research Achievements

Information about the depth as well as the voltage of the biosignal source can be retrieved by switching the voltage dividing resistance placed between signal electrode and ground electrode. This study consists of 6 research subthemes; 1) theoretical study of this high-speed voltage divider switching electrode and development of a measurement system with one electrode, 2) development of multi-channel voltage divider switching electrode system, 3) development of 3-dimensional biosignal distribution estimation method, 4) improvement of measurement accuracy by switching of ground position, 5) application for the separation of inner muscle EMG, 6) application for the measurement accuracy improvement of event-related potential. We have succeeded to obtain fruitful outcomes in each subthemes.

Free Research Field

生体医工学