The volume conductor may act as a temporal filter on the ECG and EEG

J.G. Stinstra, M.J. Peters

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    Abstract

    The influence of the volume conductor on the EEG, MEG, fetal ECG and fetal MCG is studied by means of simulations. The assumption that the Maxwell equations can be used in a quasi-static approximation is reconsidered and the fact that the conductivity of human tissue is frequency dependent is taken into account. It is found that displacement currents have a substantial effect on the fetal ECG and to a lesser degree on the fetal MCG. Moreover, the frequency dependence of the conductivity of the tissues within the head may have a considerable effect on the EEG.
    Original languageEnglish
    Pages (from-to)711-716
    Number of pages6
    JournalMedical & biological engineering & computing
    Volume36
    Issue number6
    DOIs
    Publication statusPublished - Nov 1998

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    Keywords

    • Volume conductor - Electroencephalography - Magnetoencephalography - Fetal electrocardiography - Fetal magnetocardiography
    • IR-59748

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