EEG analysis on skull conductivity perturbations using realistic head model
Paper
Paper/Presentation Title | EEG analysis on skull conductivity perturbations using realistic head model |
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Presentation Type | Paper |
Authors | Bashar, Md. Rezaul (Author), Li, Yan (Author) and Wen, Peng (Author) |
Editors | Wen, Peng, Li, Yuefeng, Polkowski, Lech, Yao, Yiyu, Tsumoto, Shusaku and Wang, Guoyin |
Journal or Proceedings Title | Lecture Notes in Computer Science (Book series) |
Journal Citation | 5589, pp. 208-215 |
Number of Pages | 8 |
Year | 2009 |
Publisher | Springer |
Place of Publication | Germany |
ISSN | 1611-3349 |
0302-9743 | |
ISBN | 9783642029615 |
Digital Object Identifier (DOI) | https://doi.org/10.1007/978-3-642-02962-2_26 |
Web Address (URL) of Paper | https://link.springer.com/chapter/10.1007/978-3-642-02962-2_26 |
Conference/Event | 4th International Conference on Rough Sets and Knowledge Technology (RSKT 2009) |
Event Details | 4th International Conference on Rough Sets and Knowledge Technology (RSKT 2009) Parent International Conference on Rough Sets and Knowledge Technology (RSKT) Event Date 14 to end of 16 Jul 2009 Event Location Gold Coast, Australia |
Abstract | Measurement of electroencephalogram (EEG) requires accurate estimation of tissue conductivity. Among the head tissues, skull compartment has less conductivity due to compacta and spongiosa, which impacts on EEG measurement. Therefore, skull conductivity plays a vital role in head modeling, forward computation and source localization. In this study, we have investigated the effects of scalp potentials due to skull conductivity perturbations in realistic head models using different skull to brain and/or scalp conductivity ratio (σ ratio). Several studies used this σ ratio as 1/80, however, other studies found the values of σ ratio between 1/20 and 1/72. Each head model constructed from the values of different σ ratio ranging from 1/20 to 1/72 is compared to the head model constructed from σ ratio =1/80. The obtained results demonstrated that the skull conductivity perturbations have effects on EEG and the head model constructed from less σ ratio generates larger errors due to higher potential differences. |
Keywords | EEG; head modelling; anisotropic conductivity; MRI and FEM; electroencephalography |
ANZSRC Field of Research 2020 | 320602. Medical biotechnology diagnostics (incl. biosensors) |
469999. Other information and computing sciences not elsewhere classified | |
320222. Radiology and organ imaging | |
Public Notes | File reproduced in accordance with the copyright policy of the publisher/author. |
Byline Affiliations | Department of Mathematics and Computing |
Centre for Systems Biology |
https://research.usq.edu.au/item/9z740/eeg-analysis-on-skull-conductivity-perturbations-using-realistic-head-model
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