Localization of an inert region in the brain using modified Levenberg Marquarts neural network.
We tested the localization accuracy of electroencephalograph (EEG) for an inert region in a simulation at sizes ranging from 1 to 8 cm at 1 cm intervals. We used international 10-20 system electrodes placements and three concentric shell model to calculate forward problems. From using the data, neural network could be used to solve inverse problems. In this case, we estimate the localization of inert region. To demonstrate the effectiveness of the method, we perform simulations on location of inert region from EEG data, consists of training and test data. Based on the results of extensive studies, we conclude that neural network are high feasible as localization of inert region. These EEG estimation tasks were created by using a set of calculated, artificial EEG signals based on a number of current dipoles. The experimental results indicate that the proposed method has several attractive features. 1) The size of inert region is becoming more large and more the RMS values low. 2) The following the distance is closer, the RMS values is low. That could be considered inert region exists near by the electrode which has low RMS potential. 3) The more larger inert region were, the more small estimation error become.
Katayama
Masato
M
Faculty of Engineering, The Univ. of Tokushima, Minamijosanjima Tokushima, Japan, zmm76933@ee.tokushima-u.ac.jp
Akutagawa
Masatake
M
Abeyratne
Udantha R
UR
Kaji
Yoshio
Y
Shichijo
Fumio
F
Nagashino
Hirofumi
H
Kinouchi
Yohsuke
Y
D001921:Brain / Q000502:physiology*; D001931:Brain Mapping / Q000379:methods*; D003198:Computer Simulation; D004569:Electroencephalography / Q000379:methods; D006801:Humans; D008954:Models, Biological; D009415:Nerve Net / Q000502:physiology*