Partial signal space projection for artefact removal in MEG measurements: a theoretical analysis.
作者： G Nolte , MS Hämäläinen , None
DOI: 10.1088/0031-9155/46/11/308
关键词:
摘要: Standard methods for artefact removal in MEG or EEG measurements consist of rejection either corrupted epochs signal space projection (SSP). We propose to combine the two by applying SSP only and thus using both temporal spatial information. This partial necessarily results smaller variances source localization. Formulae dipole localization errors as a function fraction are derived verified Monte Carlo simulations with eye artefacts. A theoretical analysis various measuring devices, classes locations interest shows that proposed method leads significant improvement frontal dipoles 30-80% epochs.
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