Algorithm to find high density EEG scalp coordinates and analysis of their correspondence to structural and functional regions of the brain.
Algorithm to find high density EEG scalp coordinates and analysis of their correspondence to structural and functional regions of the brain.
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DOI：
10.1016/j.jneumeth.2014.04.020
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发表时间：
2014-05-30
影响因子：
3
通讯作者：
Diamond, Solomon G.
中科院分区：
文献类型：
--
作者：
Giacometti, Paolo;Perdue, Katherine L.;Diamond, Solomon G.
脑电图（EEG）测量的解释和分析依赖于电极头皮坐标与大脑结构和功能区域的对应关系。本文介绍了一种在人体头部边界元网格上自动计算EEG电极的国际10-20、10-10和10-5头皮坐标的算法。然后，EEG电极位置用于基于与EEG电极的接近度来生成大脑皮层的分割区域。头皮电极计算方法在这项研究中提出了有效和高效地识别EEG的位置，而无需事先数字化的坐标。在20名成年受试者的人群中，就大脑的结构和功能区域对皮质的电极邻近包裹的平均值进行制表。基于电极接近度和EEG灵敏度的包裹进行了比较。当通过国际10-20、10-10和10-5电极定位系统标定时，发现基于灵敏度和邻近度的分割区域具有44.0 ± 11.3%的一致性，32.4 ± 12.6%的一致性，24.7 ± 16.3%的一致性。EEG定位算法是定位EEG头皮坐标而不需要数字化电极位置的快速且容易的方法。所提出的parcellation方法总结了EEG头皮位置相对于大脑区域，而无需计算一个完整的EEG前向模型解决方案。电极接近度对皮质区域的参考表可以由实验者使用以选择对应于感兴趣的解剖和功能区域的电极。
Interpretation and analysis of electroencephalography (EEG) measurements relies on the correspondence of electrode scalp coordinates to structural and functional regions of the brain. An algorithm is introduced for automatic calculation of the International 10–20, 10-10, and 10-5 scalp coordinates of EEG electrodes on a boundary element mesh of a human head. The EEG electrode positions are then used to generate parcellation regions of the cerebral cortex based on proximity to the EEG electrodes. The scalp electrode calculation method presented in this study effectively and efficiently identifies EEG locations without prior digitization of coordinates. The average of electrode proximity parcellations of the cortex were tabulated with respect to structural and functional regions of the brain in a population of 20 adult subjects. Parcellations based on electrode proximity and EEG sensitivity were compared. The parcellation regions based on sensitivity and proximity were found to have 44.0 ± 11.3% agreement when demarcated by the International 10–20, 32.4 ± 12.6% by the 10-10, and 24.7 ± 16.3% by the 10-5 electrode positioning system. The EEG positioning algorithm is a fast and easy method of locating EEG scalp coordinates without the need for digitized electrode positions. The parcellation method presented summarizes the EEG scalp locations with respect to brain regions without computation of a full EEG forward model solution. The reference table of electrode proximity versus cortical regions may be used by experimenters to select electrodes that correspond to anatomical and functional regions of interest.
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影响因子：
5.7
作者：
Fischl, B;Sereno, MI;Dale, AM
通讯作者：
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