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. 2014 Mar 19;8:31. doi: 10.3389/fncom.2014.00031

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Copyright © 2014 Stephen, Lepage, Eden, Brunner, Schalk, Brumberg, Guenther and Kramer.

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 network inference procedure facilitates interpretations of real ECoG data. Binary correlation (A) and canonical correlation (C) networks were inferred from speech data in the intervals 500 ms before (left) and 500 ms after (right) speech onset. The corresponding densities are significantly nonzero for both correlation networks (B), but not for the canonical correlation networks (D). The node colors in (A) represent for each electrode the corresponding ROI, shown in (C). Node locations in (C) are the average locations of the electrodes corresponding to the ROI. In (C), the node indicated by an asterisk (*) is the ventral primary motor cortex ROI, which is discussed in the text (Methods section ECoG Data).