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. 2022 Sep 1;16:971829. doi: 10.3389/fnins.2022.971829

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Copyright © 2022 Hu, Chen, Jiang, Ji, Mei, Chen and Wang.

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) and the copyright owner(s) 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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Demonstration of the counterintuitive relation between signal correlation and physical distance. (A) Illustrates that the matching strategy needs to match the EEG channel (Cz, yellow-doted at the top) to one of the candidate SEEG channels (A14/H14, red-/green-circled at the bottom). Despite the closer physical distance of SEEG A14 to EEG Cz which is shown in the topological map (top of B) and the 3-D location (bottom of B), the farther HD is observed in A14 rather than H14 (C). H14 is considered to be an appropriate match to Cz.