Gutman A, Shimoliunas A
Biofizika. 1976 Sep-Oct;21(5):898-904.
The estimaiton of ECoG-potentials is fulfilled by means of a simple model of the isolated sphere, which is exact enough, as it was proved earlier [1]. A simple limit formula for the qualitative estimation of ECoG-potentials of a source situated in the cerebral cortex is obtained. The EEG as in [2] is obtained using the transformation of the first 20 spheric harmonics. The experimental facts of registration of the evoked potentials of comparatively little subcortical sources were explained theoretically. Numerical results of the model are used to estimate the intensity of the field induced in the brain by two electrodes placed on the scalp.
通过一个孤立球体的简单模型来实现脑电信号电位的估计，如之前所证明的[1]，该模型足够精确。得到了一个用于定性估计位于大脑皮层的源的脑电信号电位的简单极限公式。如[2]中所述，通过对前20个球谐函数的变换来获得脑电图。从理论上解释了相对较小的皮层下源的诱发电位记录的实验事实。该模型的数值结果用于估计放置在头皮上的两个电极在大脑中诱发的场强。
