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. 2014 Feb 21;8:14. doi: 10.3389/fncom.2014.00014

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Copyright © 2014 Wang 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) 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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(A) The negative energy ratio as the coupling strength and the signal transform delay simultaneously changes. (B) The correlation coefficient as the coupling strength and the signal transform delay simultaneously changes.