The need for correct realistic geometry in the inverse EEG problem
- 1 January 1999
- journal article
- research article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Biomedical Engineering
- Vol. 46 (11) , 1281-1287
- https://doi.org/10.1109/10.797987
Abstract
For accurate electroencephalogram-based localization of mesial temporal and frontal sources correct modeling of skull shape and thickness is required. In a simulation study in which results for matched sets of computed tomography and magnetic resonance (MR) images are compared, it is found that errors arising from skull models based on smooth and inflated segmented MR images of the cortex are of the order of 1 cm. These errors are comparable to those found when overestimating or underestimating skull conductivity by a factor of two.Keywords
This publication has 9 references indexed in Scilit:
- Dipole localization in patients with epilepsy using the relistically shaped head modelElectroencephalography and Clinical Neurophysiology, 1997
- Dipole Modeling in Epilepsy Surgery CandidatesEpilepsia, 1997
- EEG localization accuracy improvements using realistically shaped head modelsIEEE Transactions on Biomedical Engineering, 1996
- How well does a three-sphere model predict positions of dipoles in a realistically shaped head?Electroencephalography and Clinical Neurophysiology, 1993
- Effects of local variations in skull and scalp thickness on EEG's and MEG'sIEEE Transactions on Biomedical Engineering, 1993
- Accurate Matching of electromagnetic dipole data with CT and MR imagesBrain Topography, 1991
- Combined use of subdural and intracerebral electrodes in preoperative evaluation of epilepsyNeurosurgery, 1990
- Source parameter estimation in inhomogeneous volume conductors of arbitrary shapeIEEE Transactions on Biomedical Engineering, 1989
- On the numerical accuracy of the boundary element method (EEG application)IEEE Transactions on Biomedical Engineering, 1989