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. 1996 Spring;8(3):223-8.
doi: 10.1007/BF01184773.

Variation of frontal P20 potential due to rotation of the N20-P20 dipole moment of SEPs

J Okada  1 , F Shichijo, K Matsumoto, Y Kinouchi
Affiliations

Variation of frontal P20 potential due to rotation of the N20-P20 dipole moment of SEPs

J Okada et al. Brain Topogr. 1996 Spring.

Abstract

We have applied the artificial neural network method to estimate the N20-P20 dipole from scalp SEP potentials, and have investigated the rotation of the dipole moment caused by the compression effect of a brain tumor (para-Rolandic tumor) adjacent to the central sulcus. The variation of the frontal P20 potential was demonstrated by the rotation of the N20-P20 dipole moment in 8 cases of para-Rolandic tumor. By estimation of the rotation of the dipole moment, it may be possible to obtain preoperative information regarding the relation between the central sulcus and the tumor.

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