Study of inhomogeneious head model based on conductivity issues

Peng Wen; Richard Clark; Fangpo He; Karl Sammut

Study of inhomogeneious head model based on conductivity issues

Peng Wen, Richard Clark, Fangpo He, Karl Sammut

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

Abstract

The aim of this study is to testify the effects of different inhomogeneious tissues on computed electrical potential fields associated with the electroencephalograph. The inhomogeneity of head tissues is included in head model using so-called pseudo conductivity created by limited, experimental measured data. Simulations were performed varying the conductivities assigned to the different head compartments in the model. Comparisons of different conductivity combinations followed one of two basic schemes: 1) a piecewise homogeneous multi-layer head serves as the reference against which we compared simulations with a single tissue assigned its pseudo conductivity, and 2) a fully inhomogeneious head serves as the reference and we remove the effect of individual tissue by assign it the homogeneous conductivity value. The result both in 1) and 2) show that the skull have larger impacts on the head potential distribution than other element. It also show that the size of the effect is not neglectable in all tissue. This study suggest that accurate representation of tissue inhomogeneity has a significant effect on the accuracy of the forward solution.

Original language	English
Title of host publication	IEEE SMC'99 Conference Proceedings. 1999 IEEE International Conference on Systems, Man, and Cybernetics
Publisher	Institute of Electrical and Electronics Engineers
Pages	II-424 - II-427
ISBN (Print)	0780357310
Publication status	Published - Oct 1999
Event	1999 IEEE International Conference on Systems, Man, and Cybernetics 'Human Communication and Cybernetics' - Tokyo, Jpn Duration: 12 Oct 1999 → 15 Oct 1999

Publication series

Name	IEEE International Conference on Systems, Man, and Cybernetics. Conference Proceedings
Volume	2
ISSN (Print)	1062-922X

Conference

Conference	1999 IEEE International Conference on Systems, Man, and Cybernetics 'Human Communication and Cybernetics'
City	Tokyo, Jpn
Period	12/10/99 → 15/10/99

Cite this

Wen, P., Clark, R., He, F., & Sammut, K. (1999). Study of inhomogeneious head model based on conductivity issues. In IEEE SMC'99 Conference Proceedings. 1999 IEEE International Conference on Systems, Man, and Cybernetics (pp. II-424 - II-427). ( IEEE International Conference on Systems, Man, and Cybernetics. Conference Proceedings ; Vol. 2). Institute of Electrical and Electronics Engineers.

Wen, Peng ; Clark, Richard ; He, Fangpo et al. / Study of inhomogeneious head model based on conductivity issues. IEEE SMC'99 Conference Proceedings. 1999 IEEE International Conference on Systems, Man, and Cybernetics . Institute of Electrical and Electronics Engineers, 1999. pp. II-424 - II-427 ( IEEE International Conference on Systems, Man, and Cybernetics. Conference Proceedings ).

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title = "Study of inhomogeneious head model based on conductivity issues",

abstract = "The aim of this study is to testify the effects of different inhomogeneious tissues on computed electrical potential fields associated with the electroencephalograph. The inhomogeneity of head tissues is included in head model using so-called pseudo conductivity created by limited, experimental measured data. Simulations were performed varying the conductivities assigned to the different head compartments in the model. Comparisons of different conductivity combinations followed one of two basic schemes: 1) a piecewise homogeneous multi-layer head serves as the reference against which we compared simulations with a single tissue assigned its pseudo conductivity, and 2) a fully inhomogeneious head serves as the reference and we remove the effect of individual tissue by assign it the homogeneous conductivity value. The result both in 1) and 2) show that the skull have larger impacts on the head potential distribution than other element. It also show that the size of the effect is not neglectable in all tissue. This study suggest that accurate representation of tissue inhomogeneity has a significant effect on the accuracy of the forward solution.",

author = "Peng Wen and Richard Clark and Fangpo He and Karl Sammut",

year = "1999",

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series = " IEEE International Conference on Systems, Man, and Cybernetics. Conference Proceedings ",

publisher = "Institute of Electrical and Electronics Engineers",

pages = "II--424 -- II--427",

booktitle = "IEEE SMC'99 Conference Proceedings. 1999 IEEE International Conference on Systems, Man, and Cybernetics",

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note = "1999 IEEE International Conference on Systems, Man, and Cybernetics 'Human Communication and Cybernetics' ; Conference date: 12-10-1999 Through 15-10-1999",

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Wen, P, Clark, R, He, F & Sammut, K 1999, Study of inhomogeneious head model based on conductivity issues. in IEEE SMC'99 Conference Proceedings. 1999 IEEE International Conference on Systems, Man, and Cybernetics . IEEE International Conference on Systems, Man, and Cybernetics. Conference Proceedings , vol. 2, Institute of Electrical and Electronics Engineers, pp. II-424 - II-427, 1999 IEEE International Conference on Systems, Man, and Cybernetics 'Human Communication and Cybernetics', Tokyo, Jpn, 12/10/99.

Study of inhomogeneious head model based on conductivity issues. / Wen, Peng; Clark, Richard; He, Fangpo et al.
IEEE SMC'99 Conference Proceedings. 1999 IEEE International Conference on Systems, Man, and Cybernetics . Institute of Electrical and Electronics Engineers, 1999. p. II-424 - II-427 ( IEEE International Conference on Systems, Man, and Cybernetics. Conference Proceedings ; Vol. 2).

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

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AU - He, Fangpo

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AB - The aim of this study is to testify the effects of different inhomogeneious tissues on computed electrical potential fields associated with the electroencephalograph. The inhomogeneity of head tissues is included in head model using so-called pseudo conductivity created by limited, experimental measured data. Simulations were performed varying the conductivities assigned to the different head compartments in the model. Comparisons of different conductivity combinations followed one of two basic schemes: 1) a piecewise homogeneous multi-layer head serves as the reference against which we compared simulations with a single tissue assigned its pseudo conductivity, and 2) a fully inhomogeneious head serves as the reference and we remove the effect of individual tissue by assign it the homogeneous conductivity value. The result both in 1) and 2) show that the skull have larger impacts on the head potential distribution than other element. It also show that the size of the effect is not neglectable in all tissue. This study suggest that accurate representation of tissue inhomogeneity has a significant effect on the accuracy of the forward solution.

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Wen P, Clark R, He F, Sammut K. Study of inhomogeneious head model based on conductivity issues. In IEEE SMC'99 Conference Proceedings. 1999 IEEE International Conference on Systems, Man, and Cybernetics . Institute of Electrical and Electronics Engineers. 1999. p. II-424 - II-427. ( IEEE International Conference on Systems, Man, and Cybernetics. Conference Proceedings ).

Study of inhomogeneious head model based on conductivity issues

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