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. 2014 Mar 25;10:23. doi: 10.1186/1744-8069-10-23

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Copyright © 2014 Leung et al.; licensee BioMed Central Ltd.

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly credited. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

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Comparison of Granger Causality Analysis inference among regions of activities (ROA) extracted from EA3>Baseline and EA2>Baseline. Blue box color indicates deactivation; Green arrow signifies inference originating from the left hemisphere, whereas orange arrow signifies inference originating from the right hemisphere; 1°SCC; Primary Somatosensory Cortex; 2°SCC: Secondary Somatosensory Cortex; ACC: Anterior Cingulate Cortex; PCC: Posterior Cingulate Cortex; DLPFC: Dorsolateral Prefrontal Cortex; IN: Insular Cortex; Med: Medial; Ant: Anterior; Post: Posterior.