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. 2017 Sep 14;12(9):e0184603. doi: 10.1371/journal.pone.0184603

Fig 2. Effects of CSS and ECS on tone-shock (CS-US) fear conditioning and expression, measured as % time spent freezing.

Fig 2

A + B: Fear conditioning stage; (A) Inter-trial intervals between CS-US pairings, (B) During CS of CS-US trials. C + D: Fear expression stage; (C) Inter-trial intervals between CS, (D) During CS trials. Data presented as mean + sem. In (A), significant treatment x trial interaction and significant trial-specific treatment effects in post hoc tests # p<0.05, ### p<0.001. In (B), significant main effect of trial ^ p<0.05, and significant main effect of treatment # p<0.05. In (C) and (D), significant main effect of treatment #### p<0.0001.