제어로봇시스템학회:학술대회논문집

Institute of Control, Robotics and Systems (제어로봇시스템학회)
권호 표지

Construction of morphological filter for single trial recording of event-related potentials

  • Nishida, Shigeto (Department of Electrical Engineering, Saga University) ;
  • Nakamura, Masatoshi (Department of Electrical Engineering, Saga University) ;
  • Miyazaki, Masahito (Department of Brain Pathophysiology, Kyoto University Faculty of Medicine) ;
  • Suwazono, Shugo (Department of Brain Pathophysiology, Kyoto University Faculty of Medicine) ;
  • Honda, Manabu (Department of Brain Pathophysiology, Kyoto University Faculty of Medicine) ;
  • Nagamine, Takashi (Department of Brain Pathophysiology, Kyoto University Faculty of Medicine) ;
  • Shibasaki, Hiroshi (Department of Brain Pathophysiology, Kyoto University Faculty of Medicine)
  • Published : 1993.10.01
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Abstract

We constructed morphological filter for single sweep records of event-related potential (ERP), especially P300 waveform. By combining 4 basic operations; erosion, dilation, opening and closing, we can derive any desired filters whose property fits the current objectives. The morphological filter for single sweep records of ERP was constructed by taking account of the features of the signal and noise components. The morphological filter has superior properties of separating the signal ancl the noise even existing within a same frequency band. The constructed morphological filter was tested by using simulation data of ERP and then applied to actual ERP data of a normal subject. The results proved that the constructed morphological filter was an appropriate tool for single sweep records of ERP.

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