Toward improving the Laplacian estimation with novel multipolar concentric ring electrodes.
Toward improving the Laplacian estimation with novel multipolar concentric ring electrodes.
复制标题
利用新型多极同心环电极改进拉普拉斯估计。
DOI：
10.1109/embc.2013.6609793
复制
发表时间：
2013
期刊：
影响因子：
--
通讯作者：
Besio,WalterG
中科院分区：
文献类型：
--
作者：
Makeyev,Oleksandr;Ding,Quan;Kay,StevenM;Besio,WalterG
传统的圆盘电极脑电描记术存在空间分辨率差、选择性差、信噪比低等缺点，严重限制了其应用。同心环形电极是一种有前途的替代方案，有可能显着改善所有上述方面。在我们以前的工作中，三极同心环电极被成功地用于广泛的应用，证明其优越性，传统的圆盘电极，特别是在拉普拉斯估计的准确性。本文采取了进一步改进新型多极同心环电极的拉普拉斯算子估计的第一个基本步骤，提出了一种通用方法，使用（4n + 1）点方法（n ≥ 2）估计具有n个环的（n + 1）极电极的拉普拉斯算子，该方法允许消除高达2n阶的所有截断项。使用所提出的方法来估计拉普拉斯算子的情况下，三极，第一次，四极同心环电极的例子。
Conventional electroencephalography with disc electrodes has major drawbacks including poor spatial resolution, selectivity and low signal-to-noise ratio that are critically limiting its use. Concentric ring electrodes are a promising alternative with potential to improve all of the aforementioned aspects significantly. In our previous work, the tripolar concentric ring electrode was successfully used in a wide range of applications demonstrating its superiority to conventional disc electrode, in particular, in accuracy of Laplacian estimation. This paper takes the first fundamental step toward further improving the Laplacian estimation of the novel multipolar concentric ring electrodes by proposing a general approach to estimation of the Laplacian for an (n + 1)-polar electrode with n rings using the (4n + 1)-point method for n ≥ 2 that allows cancellation of all the truncation terms up to the order of 2n. Examples of using the proposed approach to estimate the Laplacian for the cases of tripolar and, for the first time, quadripolar concentric ring electrode are presented.