Study on brain electrical characteristics for two dimentional ( 2d ) real head models the brain electrical characteristics have been analyzed for 2d four layers concentric sphere head model , axial real and sagittal real head models from mri pictures . the equi - potential lines can be gotten in different drive patterns and it shows that the sensitivity for the resolution region , especially the center region in opposite drive pattern is more than others because the head bone has very low conductivity . the potential distributions change with conductivity increase and reduce within head 进行了基于eit技术的二维( 2d )脑电四层同心圆头模型和真实头模型的电特性分析计算对2d四层同心圆头模型和山mri技术获得的头的断层图片构造的2d轴位真实头模型及2d矢位真实头模型的电特性进行分析，给出了各种激励情况下的等电位线分布。
