Construction of a morphological filter for detecting an event-related potential P300 in single sweep EEG record in children
✍ Scribed by S. Nishida; M. Nakamura; M. Miyazaki; S. Suwazono; M. Honda; T. Nagamine; H. Shibasaki
- Publisher
- Elsevier Science
- Year
- 1995
- Tongue
- English
- Weight
- 874 KB
- Volume
- 17
- Category
- Article
- ISSN
- 1350-4533
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✦ Synopsis
4 morpholop'cal filter for single sweep records of event-related potential (l3.P) obtained in an audito? oddball paradip, especially I'300 waveform, was constructed. By combiningfour basic operations; erosion, dilation, opening and closing, we could derive a desired jiltpr whose pro@rties fit the current objectives. The morphological filter Jar the .single swet$ records of iS.l' was constructed by taking into account the featum of the signal and noise corn@nents. The morphological filter had superior properties for distinguishing the signal from the noise even when both ~FW within the same freyuenq band, as in case of children. The constructed morphological Jilter was Qoaluated &y using the simulation data of ERP and then applied to the actual ERP data obtained from nine nmmal children.
The construrted morphological jilter was proved to be an appropriate tool ,/br single sm~ep analysi.v of EU.P.