Figure 5.

Hippocampal inactivation before testing disrupts renewal of fear after a single extinction training session (experiment 2). Mean ± SEM percentage of freezing averaged across the first 5 post-CS minutes during testing. Rats were tested either in a context consistent with extinction training (open bars) or in a context inconsistent with CS-alone presentations during the extinction training (filled bars). Testing took place 20–25 min after an intrahippocampal infusion of either saline or muscimol.