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Signal and Noise Covariance Estimation Based on ICA for High-Resolution Cortical Dipole Imaging
http://hdl.handle.net/10191/25906
http://hdl.handle.net/10191/2590673866c68-3b74-4cc0-8120-90d44f474909
名前 / ファイル | ライセンス | アクション |
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E93-D_9_2626-2634.pdf (715.5 kB)
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2014-02-28 | |||||
タイトル | ||||||
言語 | en | |||||
タイトル | Signal and Noise Covariance Estimation Based on ICA for High-Resolution Cortical Dipole Imaging | |||||
言語 | ||||||
言語 | eng | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | EEG | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | cortical dipole imaging | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | spatial inverse filter | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | covariance | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | independent component analysis | |||||
資源タイプ | ||||||
資源 | http://purl.org/coar/resource_type/c_6501 | |||||
タイプ | journal article | |||||
著者 |
Hori, Junichi
× Hori, Junichi× Sunaga, Kentarou× Watanabe, Satoru |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | We investigated suitable spatial inverse filters for cortical dipole imaging from the scalp electroencephalogram (EEG). The effects of incorporating statistical information of signal and noise into inverse procedures were examined by computer simulations and experimental studies. The parametric projection filter (PPF) and parametric Wiener filter (PWF) were applied to an inhomogeneous three-sphere volume conductor head model. The noise covariance matrix was estimated by applying independent component analysis (ICA) to scalp potentials. The present simulation results suggest that the PPF and the PWF provided excellent performance when the noise covariance was estimated from the differential noise between EEG and the separated signal using ICA and the signal covariance was estimated from the separated signal. Moreover, the spatial resolution of the cortical dipole imaging was improved while the influence of noise was suppressed by including the differential noise at the instant of the imaging and by adjusting the duration of noise sample according to the signal to noise ratio. We applied the proposed imaging technique to human experimental data of visual evoked potential and obtained reasonable results that coincide to physiological knowledge. | |||||
言語 | en | |||||
書誌情報 |
en : IEICE transactions on information and systems 巻 E93-D, 号 9, p. 2626-2634, 発行日 2010-09 |
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出版者 | ||||||
言語 | ja | |||||
出版者 | 電子情報通信学会 | |||||
ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 0916-8532 | |||||
書誌レコードID | ||||||
収録物識別子タイプ | NCID | |||||
収録物識別子 | AA10826272 | |||||
DOI | ||||||
識別子タイプ | DOI | |||||
関連識別子 | http://doi.org/10.1587/transinf.e93.d.2626 | |||||
権利 | ||||||
権利情報 | Copyright (C) 2010 IEICE | |||||
権利 | ||||||
権利情報 | 本文データは学協会の許諾に基づき電子情報通信学会のサイトから複製したものである | |||||
出版タイプ | ||||||
出版タイプ | VoR | |||||
出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||
著者版フラグ | ||||||
値 | publisher | |||||
異版である | ||||||
関連タイプ | isVersionOf | |||||
識別子タイプ | URI | |||||
関連識別子 | http://search.ieice.org/ |