Figure 3.

Remote and recent contextual fear. Each test consisted of an 8 min context exposure. No tones or shocks were delivered during these sessions. A, Remote contextual fear. When exposed to the remotely trained context, sham rats exhibited high levels of freezing across the 8 min extinction test. In contrast, BLA lesions produced near complete deficits in freezing. B, Recent contextual fear. Sham rats exhibited levels of freezing comparable with those observed in the remote context. Again, BLA-lesioned rats displayed significant deficits in freezing across the extinction test.