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. 2013 Dec 23;7:97. doi: 10.3389/fnint.2013.00097

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Copyright © 2013 Manella, Alperin and Linster.

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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Odor recognition memory duration (Experiment 1). (A) The graph shows average investigation times for familiar and novel odors during Trial 2 for 30, 60, 120, and 180 min ITIs. Rats investigate the novel odor more than the familiar odor only at the 30 min ITI, but not at longer ITIs (60, 120, or 180 min ITIs). An ^* indicates significant values for pairwise comparisons (p < 0.05) for investigation time between novel and familiar odors (Fisher's LSD tests). (B) The graph shows the relative investigation of the novel odor as compared to the familiar odor by showing percentage of total investigation time in which rats investigate the novel odor; this is a measure for odor recognition memory.