
Experiment 1 renewal and summation testing. (A) Mean percent freezing during Trial 1 of the renewal test in Contexts B (extinction) and A (renewal). Circles represent individual subject’s data in each context, with some subjects overlapping. (B) Mean percent freezing across all five trials of the renewal test. (C) Mean percent freezing across all three trials of click conditioning. (D) Mean percent freezing during the summation test in Contexts B and A. Baseline represents the 3 min period prior to the onset of the first CS. Error bars represent ±SEM.










