• 한국콘텐츠학회논문지
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• 제5권1호
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• pp.19-26
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• 2005

본 논문은 생체신호(EEG/EOG)를 이용한 기계 작동 시스템을 구현하는 방법을 소개한다. 더 나아가서는 EEG/EOG 반응 컴퓨터 시스템이나 일반 바이오피드백(biofeedback) 시스템과 접목시키는 목적도 포함하고 있다. 이를 위해서 선정된 뇌파 대역의 스펙트럼 특성이나 EEG 리듬 요소, 그리고 그것들의 조합지수 및 EOG파라미터에 반응하여 기능을 수행하는 무선 완구 원격조종 시스템을 구현하고자 한다. 이러한 생체신호 처리 모듈 전체를 헤드셋에 내장 시켜서 사용자의 편의성을 제공하고 기존의 BCI 시스템과는 새로운 차원의 시스템 구현 방법을 제시한다.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2008년도 제39회 하계학술대회
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• pp.1981-1982
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• 2008

뇌파신호 측정 시에는 환자의 움직임 등으로 artifact가 발생하게 된다. 따라서 정확한 진단에는 이와 같은 artifact를 제거하는 것이 중요하다. 본 논문에서는 뇌파신호에서 발생할 수 있는 artifact 중 EOG(Electrooculogram: 안전위도)를 검출하고 제거하기 위한 방법으로 EOG 필터링(EOG filtering)을 제안하며, 나머지 근전도를 제거하기 위해 신경망(neural network)를 사용한다. 이때 입력신호의 특징이 신경망에 보다 잘 적용될 수 있도록 비선형 양자화기를 적응적으로 동작시키는 방법을 제안한다. 제안하는 방법을 통해 뇌파신호의 artifact를 효과적으로 제거할 수 있다.

• 대한인간공학회:학술대회논문집
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• 대한인간공학회 1996년도 춘계학술대회논문집
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• pp.168-185
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• 1996

In this research, an investigation of the eye movement was performed when the objects perceived by the eye are three-dimensional objects, two dimensional images, and three dimensional image. This investigation was done by observing the EOG(Electro-oculogram) waves which were achived from experiments. The observed waves were categorized into several groups. Differences among the waves were analyzed for each object and image perceived by the eye. In order to obtain waves to be analyzed, two kinds of experiments were performed. In each experiments, the saccadic eye movement and the smooth pusuit eye movement was considered as an independent variable individually. Waves obtained from the experiments were categorized into 4 types(Wave1, Wave2, Wave3, Wave4) depending on their characteristics. Unlike from the other images, three dimensional image was revealed as a key factor for the active movement of the eye. Futhermore, a unique eye movement was observed in the case of three dimensional image where the focus of the eye was achived in three steps.

• 대한인간공학회지
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• 제16권1호
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• pp.1-13
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• 1997

In this research, and investigation of the eye movement was performend when the objects perceived by the eye are three-dimensional objects, two dimensional images, and trhee dimensional images. This investigation was done by observing the EQG(Electro- oculogram) waves which were obtained from experiments. The observed waves were categorized into several groups. Differences among the waves were analyzed for each object and image perceived by the eye. In order to obtain waves for analysis, two kinds of experiments were performen. In each experiment, the saccadic eye movement and the smooth pursuit eye movement were considered as an independent variables. Waves obtained from the experiments were categorized into 4 types (Wave-1, Wave-2, Wave-3, Wave-4) depending on their characteristics. Unlike the other images, three dimensional image was revealed as a key factor for the active movement of the eye. Futhermore, a unique eye movement was observed in the case of three dimensional images where the focus of the eye was achieved through three steps.