Study on construction of P300 based brain-computer interface (BCI) by selective attention of auditory stimulus sound

2022 Fiscal Year Final Research Report

• Project/Area Number: 20H04563
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Review Section: Basic Section 90150:Medical assistive technology-related
• Research Institution: Nagoya University
• Principal Investigator: CHISHIMA Makoto 名古屋大学, 医学系研究科(保健), 教授 (80252112)
• Project Period (FY): 2020-04-01 – 2023-03-31
• Keywords: 身体障害系作業療法学 / 非侵襲性脳波応用支援技術 / ヒューマン・インタフェース / 重度神経筋疾患者（児） / 生活支援技術 / 事象関連電位P300成分 / Brain-Computer Interface / 聴覚刺激音

Outline of Final Research Achievements

As a new assistive technology for people with severe neurological disorders, we have conducted basic research on the construction of an original system that enables PC access using the P300 component of event-related potentials, focusing on human hearing characteristics, and on the conditions for stimulus presentation. Using auditory stimuli, which have not been applied in conventional "Brain-Computer Interface (BCI)" research, we investigated the possibility of constructing a P300-type BCI that uses P300 components obtained by selective attention to sound stimuli as control commands. The possibility of stable derivation of the target component by selective attention to bone-conducted and air-conducted sounds in combination with pure and compound sounds was verified in healthy subjects. We conducted basic experiments using the frequency, sound pressure, and timbre of articulated short tones and compound tones as parameters to reduce the user's stimulus burden and to ensure convenience.

Free Research Field

リハビリテーション科学・福祉工学

Academic Significance and Societal Importance of the Research Achievements

筋萎縮性側索硬化症（ALS）などの進行性神経筋疾患においては，現在においても根治的治療の確立や病態進行阻止は実現できていない．意思伝達困難へのリスク因子となる眼球運動障害の出現など，身近な家族や医療支援者との意思疎通が完全に制限されるCLIS（complete locked-in state）に至る対象者も極めて多い．生活支援に向けた研究成果は各年開催される国内の日本作業療法学会，日本リハビリテーション医学会，電子情報通信学会，生体医工学会等の学会に，国外では，各国で開催されるニューロ・リハビリテーション関連国際学会をはじめとするBCI研究に特化したシンポジウムや国際学会において成果報告する．