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. 2016 Jan 12;9:363. doi: 10.3389/fnbeh.2015.00363

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Copyright © 2016 Bunting, Nalloor and Vazdarjanova.

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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Pre-training and post-training freezing. During habituation to the foot-shock context prior to training (A), all groups exhibited negligible freezing behavior. 24 h after TFC, animals were tested for freezing to tone in a novel context (B) and freezing in the foot-shock context without tone (C). Both the TFC and TFC-Iso groups showed significantly higher levels of freezing to the tone compared with the Iso-TFC group (B); while only the TFC group showed significantly higher levels of freezing to context compared with the Iso-TFC group (C). These results show that animals anesthetized during training demonstrated anterograde amnesia for TFC, while animals anesthetized immediately after training showed no retrograde amnesia. ^∗Statistical significance vs. TFC, #statistical significance vs. TFC-Iso.