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. Author manuscript; available in PMC: 2010 Dec 14.
Published in final edited form as: Neuroscience. 2009 Sep 15;164(3):887–895. doi: 10.1016/j.neuroscience.2009.09.011

Figure 3. Comparison between males and females at various stages of the experiment.

Figure 3

(A) No sex differences were observed between male and female rats at any phase of the experiment. Habit = habituation trials; Cond. = conditioning trials. Data represent means averaged over 5 trials ± S.E.M. Males = white symbols; females = black symbols. (B) Freezing values in the male rats during fear conditioning versus female rats that underwent conditioning during the proestrus (Pro_cond) and metestrus (Met_cond) phases. No significant differences were observed among all three groups in this test. (C) Percent recovery exhibited by male rats during extinction recall versus female rats that underwent extinction learning either during the proestrus (Pro_Ext) or metestrus (Met_Ext) phases. Male rats show low fear recovery that was comparable to that shown by the Pro_Ext group, which was significantly lower than that exhibited by the Met_Ext group. *p < .05