高分辨率脑电图:1 .仿真

Proceedings of the 15th Annual International Conference of the IEEE Engineering in Medicine and Biology Societ Pub Date : 1993-10-28 DOI:10.1109/IEMBS.1993.978585

P. Nunez, R. Wijesinghe, A. Westdorp, Guangcheng Cao, R. Silberstein, P. Cadusch

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引用次数: 0

摘要

采用四个同心球体的模拟偶极子和头部有限元模型，对基于新奥尔良样条拉普拉斯和墨尔本皮质成像算法的高分辨率脑电方法进行了评估。有限元模型具有逼真的形状和可变的头骨特性。当使用64或118个电极时，这两种方法都显示出在大约2或3厘米的尺度上提供皮层表面电位的准确估计。与传统脑电图相比，这些方法提高了大约三倍的精神分辨率。

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High resolution EEG: I. simulations

High resolution EEG methods based on the New Orleans spline Laplacinn and Melbourne cortical imaging algorithms are evaluated using simulated dipoles in four concentric spheres and finite element models of the head. The finite element models have realistic shapes and variable skull properties. Both methods arc shown to provide accurate estimates of cortical surface potcntial at scales down to about 2 or 3 cm when 64 or 118 electrodes are used. These approaches improve spntial resolution over that obtained with conventional EEG by a factor of about three.

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Proceedings of the 15th Annual International Conference of the IEEE Engineering in Medicine and Biology Societ

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