REPLY TO COMMENTS MADE BY R . GRAVE DE PERALTA MENENDEZ AND

REPLY TO COMMENTS MADE BY R . GRAVE DE PERALTA MENENDEZ AND
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回复 R 的评论。

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发表时间:
2005
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通讯作者:
R. Pascual
R. Pascual
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作者:
R. Pascual

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c)我的答复:图1说明了线性和叠加定位的原理。感兴趣的读者可以利用自1998年6月以来向作者索取的软件(http://www.keyinst.unizh.ch/loreta.htm)复制这些结果(及其概括)。图1a和1b显示了两个震源在不同深度的LORETA点扩散函数。深源比浅源更模糊。LORETA解决两个同时活动的源的唯一方法是增加深源的强度,如图1c所示(与[1]中的图4相同)。一般来说,如果两个源充分分离,并且其估计强度相当,则LORETA可以分辨两个源。这是低分辨率脑电磁断层扫描(LORETA)的本质和主要属性:它总是会产生一个模糊的(近似的)现实图像。模糊并不总是允许解析所有最大值。在LORETA中从来没有任何关于“高”或“最佳”分辨率的华而不实的说法。洛丽塔的主要财产持有。
c) My Reply: The principles of linearity and superposition for localization are illustrated in Figure 1. These results (and their generalization) can be replicated by the interested reader, using software that has been available upon request to the author since June 1998 (http://www.keyinst.unizh.ch/loreta.htm). Figures 1a and 1b show LORETA point spread functions for two sources at different depths. The deep source is more blurred than the shallow source. The only way LORETA can resolve both simultaneously active sources is by increasing the strength of the deep source, as shown in Figure 1c (which is the same as Figure 4 in [1]). In general, LORETA can resolve two sources if they are sufficiently separated, and if their estimated strengths are comparable. This is the essence and main property of Low Resolution Brain Electromagnetic Tomography (LORETA): it will always produce a blurred (approximate) image of reality. Blurring will not always allow resolving all maxima. There was never any pompous claim of “high” or “optimum” resolution in LORETA. The main property of LORETA holds.