TY - GEN
T1 - The correlation between brain skull thickness asymmetry and the potential on the scalp estimated by two dimensional numerical model of the head
AU - Levy, Sima
AU - Rosenfeld, Moshe
AU - Eshel, Yoram
AU - Abboud, Shimon
N1 - Publisher Copyright:
© 1992 IEEE.
PY - 1992
Y1 - 1992
N2 - The contribution of skull thickness asymmetry to the Alpha amplitude asymmetry was investigated by a two dimensional computerized model. The model consists of three conductive layers representing the skull, the scalp, and the cortex with radially oriented dipole and with left right asymmetry of the skull thickness. The potential created by the dipole was calculated using Laplace's equation with boundary conditions, while allowing a quasistatic formulation and a linear media. The electric potential on the surface of the volume conductor is calculated by numerical differentiation using iterative successive over relaxation method for solving the large set of the resulting linear algebraic equations. It was found that for realistic values of maximal skull thickness asymmetry the potential asymmetry is approximately 10%.
AB - The contribution of skull thickness asymmetry to the Alpha amplitude asymmetry was investigated by a two dimensional computerized model. The model consists of three conductive layers representing the skull, the scalp, and the cortex with radially oriented dipole and with left right asymmetry of the skull thickness. The potential created by the dipole was calculated using Laplace's equation with boundary conditions, while allowing a quasistatic formulation and a linear media. The electric potential on the surface of the volume conductor is calculated by numerical differentiation using iterative successive over relaxation method for solving the large set of the resulting linear algebraic equations. It was found that for realistic values of maximal skull thickness asymmetry the potential asymmetry is approximately 10%.
UR - http://www.scopus.com/inward/record.url?scp=85067173253&partnerID=8YFLogxK
U2 - 10.1109/IEMBS.1992.5762147
DO - 10.1109/IEMBS.1992.5762147
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AN - SCOPUS:85067173253
T3 - Proceedings of the Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBS
SP - 2018
EP - 2019
BT - Proceedings of the Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBS 1992
A2 - Laxminarayan, Swamy
A2 - Plonsey, Robert
A2 - Morucci, Jean Pierre
A2 - Coatrieux, Jean Louis
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 14th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBS 1992
Y2 - 29 October 1992 through 1 November 1992
ER -