Influence of pseudo conductivities on the EEG forward computation for human head modelling

P. Wen; F. He; K. Sammut

doi:10.1109/ICSMC.1998.726670

Influence of pseudo conductivities on the EEG forward computation for human head modelling

P. Wen, F. He, K. Sammut

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

Abstract

In brain imaging, the accuracy involved in calculating scalp potentials due to cerebral electric sources depends on the realism of the head model. Existing methods assume homogeneous conductivity throughout each component tissue. This assumption introduces inaccuracies in computing the potentials. This paper proposes a new approach based on the use of pseudo-conductivity values in place of the uniform-conductivity values assigned to tissues. Simulation results reveal that the conductivity values have a significant effect on the computed potentials, thereby invalidating the uniform-conductivity assumption.

Original language	English
Title of host publication	SMC'98 Conference Proceedings. 1998 IEEE International Conference on Systems, Man, and Cybernetics
Publisher	Institute of Electrical and Electronics Engineers
Pages	3747-3752
Number of pages	6
ISBN (Print)	0-7803-4778-1
DOIs	https://doi.org/10.1109/ICSMC.1998.726670
Publication status	Published - 1998
Event	Proceedings of the 1998 IEEE International Conference on Systems, Man, and Cybernetics. Part 3 (of 5) - San Diego, CA, USA Duration: 11 Oct 1998 → 14 Oct 1998

Publication series

Name	Proceedings of the IEEE International Conference on Systems, Man and Cybernetics
Volume	4
ISSN (Print)	0884-3627

Conference

Conference	Proceedings of the 1998 IEEE International Conference on Systems, Man, and Cybernetics. Part 3 (of 5)
City	San Diego, CA, USA
Period	11/10/98 → 14/10/98

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10.1109/ICSMC.1998.726670Licence: In Copyright

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Wen, P., He, F., & Sammut, K. (1998). Influence of pseudo conductivities on the EEG forward computation for human head modelling. In SMC'98 Conference Proceedings. 1998 IEEE International Conference on Systems, Man, and Cybernetics (pp. 3747-3752). (Proceedings of the IEEE International Conference on Systems, Man and Cybernetics; Vol. 4). Institute of Electrical and Electronics Engineers. https://doi.org/10.1109/ICSMC.1998.726670

Wen, P. ; He, F. ; Sammut, K. / Influence of pseudo conductivities on the EEG forward computation for human head modelling. SMC'98 Conference Proceedings. 1998 IEEE International Conference on Systems, Man, and Cybernetics. Institute of Electrical and Electronics Engineers, 1998. pp. 3747-3752 (Proceedings of the IEEE International Conference on Systems, Man and Cybernetics).

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title = "Influence of pseudo conductivities on the EEG forward computation for human head modelling",

abstract = "In brain imaging, the accuracy involved in calculating scalp potentials due to cerebral electric sources depends on the realism of the head model. Existing methods assume homogeneous conductivity throughout each component tissue. This assumption introduces inaccuracies in computing the potentials. This paper proposes a new approach based on the use of pseudo-conductivity values in place of the uniform-conductivity values assigned to tissues. Simulation results reveal that the conductivity values have a significant effect on the computed potentials, thereby invalidating the uniform-conductivity assumption.",

author = "P. Wen and F. He and K. Sammut",

year = "1998",

doi = "10.1109/ICSMC.1998.726670",

language = "English",

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booktitle = "SMC'98 Conference Proceedings. 1998 IEEE International Conference on Systems, Man, and Cybernetics",

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note = "Proceedings of the 1998 IEEE International Conference on Systems, Man, and Cybernetics. Part 3 (of 5) ; Conference date: 11-10-1998 Through 14-10-1998",

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Wen, P, He, F & Sammut, K 1998, Influence of pseudo conductivities on the EEG forward computation for human head modelling. in SMC'98 Conference Proceedings. 1998 IEEE International Conference on Systems, Man, and Cybernetics. Proceedings of the IEEE International Conference on Systems, Man and Cybernetics, vol. 4, Institute of Electrical and Electronics Engineers, pp. 3747-3752, Proceedings of the 1998 IEEE International Conference on Systems, Man, and Cybernetics. Part 3 (of 5), San Diego, CA, USA, 11/10/98. https://doi.org/10.1109/ICSMC.1998.726670

Influence of pseudo conductivities on the EEG forward computation for human head modelling. / Wen, P.; He, F.; Sammut, K.
SMC'98 Conference Proceedings. 1998 IEEE International Conference on Systems, Man, and Cybernetics. Institute of Electrical and Electronics Engineers, 1998. p. 3747-3752 (Proceedings of the IEEE International Conference on Systems, Man and Cybernetics; Vol. 4).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

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AB - In brain imaging, the accuracy involved in calculating scalp potentials due to cerebral electric sources depends on the realism of the head model. Existing methods assume homogeneous conductivity throughout each component tissue. This assumption introduces inaccuracies in computing the potentials. This paper proposes a new approach based on the use of pseudo-conductivity values in place of the uniform-conductivity values assigned to tissues. Simulation results reveal that the conductivity values have a significant effect on the computed potentials, thereby invalidating the uniform-conductivity assumption.

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Wen P, He F, Sammut K. Influence of pseudo conductivities on the EEG forward computation for human head modelling. In SMC'98 Conference Proceedings. 1998 IEEE International Conference on Systems, Man, and Cybernetics. Institute of Electrical and Electronics Engineers. 1998. p. 3747-3752. (Proceedings of the IEEE International Conference on Systems, Man and Cybernetics). doi: 10.1109/ICSMC.1998.726670

Influence of pseudo conductivities on the EEG forward computation for human head modelling

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