Low noise magnetoencephalogram system and method

作者: Alan S. Gevins , Nelson H. Morgan

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摘要: A magnetoencaphalogram (MEG) detects the neuromagnetic brain signals of a subject by bringing set magnetic sensors, preferably SQUIDs (superconducting quantum interference device), close to scalp subject. The adverse effect environmental noise is reduced using second sensors which are placed near system includes bandpass filter, divide from various into predetermined frequency bands, and computer provide least squares component estimate each wave sensor calculate therefrom filtered signal having noise.