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High-resolution EEG: a new realistic geometry spline Laplacian estimation technique.

机译:高分辨率脑电图:一种新的逼真的几何样条拉普拉斯估计技术。

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BACKGROUND: A new realistic geometry (RG) spline Laplacian estimation technique has been developed for high-resolution EEG imaging. METHODS: Estimation of the parameters associated with the spline Laplacian is formulated by seeking the general inverse of a transfer matrix. The number of spline parameters, which need to be determined through regularization, is reduced to one in the present approach, thus enabling easy implementation of the RG spline Laplacian estimator. RESULTS: Computer simulation studies have been conducted to test the feasibility of the new approach in a 3-concentric-sphere head model. The new technique has also been applied to human visual evoked potential data with a RG head model. CONCLUSIONS: The present numerical and experimental results demonstrate the feasibility of the new approach and indicate that the RG spline Laplacian can be estimated easily from the surface potentials and the scalp geometry.
机译:背景:已开发出一种新的逼真的几何(RG)样条Laplacian估计技术用于高分辨率脑电图成像。方法:通过寻找传递矩阵的一般逆来确定与样条拉普拉斯算子相关的参数的估计。在本方法中,需要通过正则化确定的样条参数的数量减少为一个,因此可以轻松实现RG样条Laplacian估计器。结果:已经进行了计算机仿真研究,以测试这种新方法在3个同心球头模型中的可行性。这项新技术也已应用于具有RG头部模型的人类视觉诱发电位数据。结论:目前的数值和实验结果证明了该新方法的可行性,并表明可以容易地根据表面电势和头皮的几何形状估算RG样条拉普拉斯算子。

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