[在模型均匀无限制环境中脑生物电活动源空间定位的准确性]
[Accuracy of the spatial localization of the sources of brain bioelectrical activity in a model homogeneous unrestricted environment].
作者信息
Frolov A A, Ponomarev V N
出版信息
Zh Vyssh Nerv Deiat Im I P Pavlova. 1988 Sep-Oct;38(5):897-904.
The possibility is considered of use of the model of homogeneous unlimited medium (HUM) for localization of sources of brain bioelectrical activity at recording of electric potentials on its surface. It is shown that when the recording electrodes are arranged in accordance with 10-20 system, the source localization error does not exceed 10% of the head radius practically in any position of the source. A significant dependence is revealed of the source localization error on the concrete electrodes system used in experiment. It demands careful treatment of the available general recommendations on correction of the position of the source found by HUM model without consideration of the concrete arrangement of recording electrodes.
考虑了在记录大脑表面电势时使用均匀无限介质（HUM）模型来定位大脑生物电活动源的可能性。结果表明，当记录电极按照10-20系统排列时，源定位误差实际上在源的任何位置都不超过头部半径的10%。研究发现源定位误差与实验中使用的具体电极系统有显著相关性。这就要求在不考虑记录电极具体排列的情况下，谨慎对待基于HUM模型找到的源位置校正的现有一般建议。
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