Figure 4.

Muscimol inactivation of RE did not impair the acquisition or expression of freezing to an auditory CS. A, Average percentage of freezing during a 10 min stimulus free baseline (BL) and after five tone presentations (indicated by the gray hatch marks on the x-axis) during an auditory retrieval test. Freezing during each trial represents the average freezing during the CS and ITI. Animals received either saline (S) or muscimol (M) infusions before conditioning and retrieval testing in a factorial design to yield four groups (S-S, M-S, S-M, M-M). B, Average percentage of freezing across all five CS trials shown in A. All data are shown as the mean ± SEM.