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. 2017 Jun 20;11:116. doi: 10.3389/fnbeh.2017.00116

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Copyright © 2017 Shi, Fan, Xue, Wen and Zhao.

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 effects of sulpiride microinfusion to the BLA before extinction training on LTM. (A) Rats were presented with three pairings of tone and footshock in the conditioning chamber. (B) Administration of sulpiride before extinction training impaired within-session extinction (^∗P < 0.05). (C) The total freezing levels of LTM after fear extinction training following sulpiride administration. The LTM level of the Sul-EXT group (n = 15) was also significantly higher than that of the Sal-EXT group II (n = 14, ^∗P < 0.05).