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. 2001 Mar 1;21(5):1720–1726. doi: 10.1523/JNEUROSCI.21-05-01720.2001

Fig. 1.

Fig. 1.

Context-specific expression of extinction (experiment 1). A, Mean ± SEM percentage of freezing from the first five CS presentations across the 5 d of extinction in contexts A (SAME) and B (DIFF). Extinction commenced 1 d after fear conditioning. SAME rats (open circles) were conditioned, extinguished, and tested in context A. DIFF rats (filled circles) were conditioned and tested in context A but extinguished in context B. NoEXT rats (data not shown) were conditioned and tested in context A but received no extinction training. B, Mean ± SEM percentage of freezing during the first minute after CS onset for the groups described in A (SAME, open bar; DIFF, filled bar; NoEXT, striped bar).