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. 2014 May 15;8:176. doi: 10.3389/fnbeh.2014.00176

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Copyright © 2014 Boulanger Bertolus, Hegoburu, Ahers, Londen, Rousselot, Szyba, Thévenet, Sullivan-Wilson, Doyère, Sullivan and Mouly.

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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Learning retention session. Animals were tested the day after conditioning. (A) Infant rats (Paired, n = 5; Unpaired, n = 6; Odor, n = 6) were given a Y-Maze test and the number of CS choices (mean ± s.e.m.) out of 5 were used as a measure of learning. (B) Juveniles (Paired, n = 7; Unpaired, n = 9; Odor, n = 6) and (C) adults (Paired, n = 8; Unpaired, n = 8; Odor, n = 10) received a cue test in a novel environment and the freezing rate (mean ± s.e.m.) was compared between pre-CS and CS Odor. ^#Significant intragroup difference (p < 0.05); ^*significant intergroup difference (p < 0.05).