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

¹Graduate School Integrated BioMedical Engineering for Restoration of Human Function (iBME), Faculty of Applied Physics, University of Twente, Enschede, The Netherlands. m.j.peters@tn.utwente.nl

Medical & Biological Engineering & Computing

|June 15, 1999

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.

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Abstract:

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