지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
초록· 키워드
오류제보하기
In order to extract only the alpha activity related signals from EEG recordings, we have applied Constrained Independent Component Analysis (cICA), a new extension of ICA in which some a priori knowledge of the alpha activity is utilized to extract only desired components. Its extraction (or filtering) performance has been compared to that of the conventional band-pass filtering via the scalp alpha power maps and cortical source maps of the alpha activity. Our results demonstrate that the alpha power maps and cortical source maps from the cICA-extracted alpha signals reveal more focalized alpha generating regions of the brain than those from the band-pass filtered alpha EEG signals. Furthermore they match more closely the activated regions of the brain mapped using fMRI, validating our results. We believe that the cICA-based filtering approach of EEG signals is a more effective means of extracting a specific brain activity reflected in EEG signals that will result in more accurate source localization or imaging maps.
목차
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참고문헌 (17)
참고문헌 신청
/ / SPM
A. Hyvarinen / 2001 / Independent component analysis / John Whily & Sons Ltd
A.Hyvarinen / 1998 / New approximations of differential entropy for independent component analysis and projection pursuit / Advances in Neural Information Processing Systems
A.M. Dale / 1993 / Improved localization of cortical activity by combining EEG and MEG with MRI cortical surface reconstruction:A linear approach / J. of Cognitive Neuroscie
BESA / / BESA
A. Hyvarinen / 2001 / Independent component analysis / John Whily & Sons Ltd
A.Hyvarinen / 1998 / New approximations of differential entropy for independent component analysis and projection pursuit / Advances in Neural Information Processing Systems
A.M. Dale / 1993 / Improved localization of cortical activity by combining EEG and MEG with MRI cortical surface reconstruction:A linear approach / J. of Cognitive Neuroscie
BESA / / BESA
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