A, Mean percentage of freezing (± SEM) 1 min before and during the ITIs intervening 10 light–shock pairings (small bars) in context A (with no infusions).Solid circles are to-be-APV, and open circles are to-be-ACSF groups on day 2. B, Mean percentage of freezing (± SEM) during 8 min in context A after intra-BLA infusions of ACSF or APV. C, Mean percentage of freezing (± SEM) during the 8 min extinction test in context A.Inset, Mean percentage of freezing exhibited by APV and ACSF groups during the 8 min context tests on days 2 and 3.D, Mean percentage of freezing (± SEM) 1 min before and during 8 min light retention test (horizontal line) in context B after intra-BLA infusions of either ACSF or APV.E, Mean percentage of freezing (± SEM) during light extinction test in context B. Inset, Mean percentage of freezing displayed by APV and ACSF groups during the 8 min light tests on days 4 and 5.