대한의용생체공학회:의공학회지 (Journal of Biomedical Engineering Research)

  • 제25권3호
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  • Pages.227-233
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  • 2004
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  • 1229-0807(pISSN)
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  • 2288-9396(eISSN)
대한의용생체공학회 (The Korean Society of Medical and Biological Engineering)
권호 표지

전두엽 뇌전도 전극 배치의 제안 및 JADE를 이용한 잡음제거

Proposition of the EEG Electrode Arrangement at a Frontal Lobe and Rejection of Noise Using a JADE

  • 박정제 (경북대학교 대학원 의용생체공학과) ;
  • 이윤정 (경북대학교 대학원 의용생체공학) ;
  • 김필운 (경북대학교 대학원 의용생체공학) ;
  • 구성모 (두원공과대학교 정보통신ㆍ미디어계) ;
  • 조진호 (경북대학교 전자전기컴퓨터학) ;
  • 김명남 (경북대학교 의과대학 의공학교실)
  • 발행 : 2004.06.01
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⟨ 이전 논문 다음 논문 ⟩

초록

본 논문에서는 뇌전도 바이오피드백 시스템을 위한 4채널 전두엽 전극 배치 및 JADE를 사용한 잡음 제거 방법을 제안하였다. 망막-각막 쌍극자 모델을 기반하여 4채널 전두엽 전극 배치를 제안하였으며, 이 배치에 의해서 얻은 신호에 대해서 JADE를 적용하여 4개의 독립 성분을 획득하였다. 각 독립 성분들 중에서 순수 뇌전도 성분을 추정하기 위해서 전체 신호에 대한 알파파비를 측정하여 그 값이 가장 큰 독립 성분을 잡음이 제거된 순수한 뇌전도로 추정하였다. 그 실험 결과 제안한 방법이 뇌전도 획득 과정에서 효과적으로 잡음을 제거함을 확인하였다.

In this paper, it is proposed that the four channel electrode arrangement at a frontal lobe and the noise reduction method using a JADE for the EEG biofeedback system. The proposed electrode arrangement is based on the retina-cornea dipole model. Using JADE and signals which are acquired by the proposed arrangement, four independent components are separated. To estimate a pure EEG component among four components, it is measured that a ratio of alpha wave to the whole signal and then the component that has a maximum value is considered as a pure EEG which the noise is eliminated. As a result of experiments, the proposed methods are effective in reduction of noises during acquisition of the EEG.

키워드

참고문헌

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