TY - GEN
T1 - Influence of pseudo conductivities on the EEG forward computation for human head modelling
AU - Wen, P.
AU - He, F.
AU - Sammut, K.
PY - 1998
Y1 - 1998
N2 - 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.
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.
UR - http://www.scopus.com/inward/record.url?scp=0032321218&partnerID=8YFLogxK
U2 - 10.1109/ICSMC.1998.726670
DO - 10.1109/ICSMC.1998.726670
M3 - Conference contribution
AN - SCOPUS:0032321218
SN - 0-7803-4778-1
T3 - Proceedings of the IEEE International Conference on Systems, Man and Cybernetics
SP - 3747
EP - 3752
BT - SMC'98 Conference Proceedings. 1998 IEEE International Conference on Systems, Man, and Cybernetics
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - Proceedings of the 1998 IEEE International Conference on Systems, Man, and Cybernetics. Part 3 (of 5)
Y2 - 11 October 1998 through 14 October 1998
ER -