Figure 2.

Experiment 2. In both learning conditions, MDZ administration did not have an amnestic effect when the retraining used exactly similar parameters as used during initial training. Furthermore, the control of CR of each learning condition was not altered by the amnestic. (A,B) Both MDZ and SAL groups showed similar amounts of CR expression from test to retest, regardless of the initial training condition. (C,D) In each learning condition, the CR increased and decreased (1 min) or increased (5 min) during test according to the time point at which the US was delivered during training. Data are expressed as means ± SEMs.