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首页> 外文期刊>Computer Methods and Programs in Biomedicine: An International Journal Devoted to the Development, Implementation and Exchange of Computing Methodology and Software Systems in Biomedical Research and Medical Practice >A study on the reference electrode standardization technique for a realistic head model.
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A study on the reference electrode standardization technique for a realistic head model.

机译：用于现实头部模型的参比电极标准化技术的研究。

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摘要

One oldest technical problem in EEG practice is the effect of an active reference on EEG recording, and it is especially important for identifying the temporal information of EEG recordings. To solve this problem, a reference electrode standardization technique (REST) has been proposed for a concentric three-sphere head model. REST, based on an equivalent distributed source model, reconstructs the potential with a reference at infinity from the potential with a scalp point reference or with the average reference. In this paper, investigated was the REST for a realistic head model. The results of simulation studies show that the potential reconstruction for the realistic head model is more sensitive to noise than that for the concentric three-sphere head model, so a regularized inverse by truncated singular value decomposition was introduced. The results confirm that REST is still an efficient method even for a realistic head model especially for the most important superficial cortex region.
机译：EEG实践中最古老的技术问题是主动参考对EEG记录的影响，这对于识别EEG记录的时间信息尤为重要。为了解决这个问题，已经提出了用于同心三球头模型的参考电极标准化技术（REST）。 REST基于等效的分布式源模型，从具有头皮点参考或平均参考的电位中无穷大的参考重建电位。在本文中，研究了用于现实头部模型的REST。仿真研究结果表明，与同心三球头模型相比，现实头模型的电势重构对噪声更敏感，因此引入了通过截断奇异值分解的正则化逆。结果证实，即使对于真实的头部模型，尤其是对于最重要的浅表皮层区域，REST仍然是一种有效的方法。

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