Figure 4.

Data collected during the 2-min preshock phase (PreSh) and 4-min shock phase (Sh) on the training day and during the 6-min closed-door test (Test). (A). Pretraining: rats were injected with saline (train-sal) or muscimol (train-mus) and shocked or saline (con-sal) and not shocked. ^**P < 0.01 vs. con-sal and train-mus during Sh phase. ++P < 0.01 vs. con-sal during Test. +P < 0.05 vs. train-sal and con-sal during Test. (B). Pretesting: rats were shocked and injected with saline (test-sal) or muscimol (test-mus) or not shocked and injected with saline (con-sal) before testing. ^**P < 0.01 vs. test-sal and test-mus during Sh phase. ++P < 0.01 vs. test-sal during Test. Arrows indicate when the injections were given.