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. 2016 Dec 15;10:101. doi: 10.3389/fncir.2016.00101

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Copyright © 2016 Herreras.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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The blending of multiple dipolar sources produces spatial indetermination of the contributions. Schematic representation of two different sources blending in a given space. For isolated sources, the positive and negative areas are well delimited by the structural factors and all values are proportional but for blended sources (as in the LFP), the quantitative contribution of the originals cannot be estimated: white areas may adopt any positive or negative value at different instants, and darkened red and blue areas adopt values in different sites that are not proportional between them.