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. 2014 Feb;21(2):73–81. doi: 10.1101/lm.032557.113

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© 2014 Siette et al.; Published by Cold Spring Harbor Laboratory Press

This article is distributed exclusively by Cold Spring Harbor Laboratory Press for the first 12 months after the full-issue publication date (see http://learnmem.cshlp.org/site/misc/terms.xhtml). After 12 months, it is available under a Creative Commons License (Attribution-NonCommercial 3.0 Unported), as described at http://creativecommons.org/licenses/by-nc/3.0/.

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Figure 6. — (A) Animals ran ∼2000 m across 3 h and no differences were observed between groups. (B) Running distance was positively correlated with freezing behavior in the 90-sec reexposure group (R_90 sec), indicating that greater running distances lead to increased levels of freezing, indicative of memory strengthening. (C) Running distance was negatively correlated with freezing behavior in the 14-min exposure groups (R_14 min), indicating that greater running distances lead to decreased levels of freezing, indicative of enhanced extinction.