Figure 2.
(a) Mean (±SEM) CS-elicited freezing by vehicle- and FGF2-treated rats in response to the CS during extinction training in Experiment 2. Some of these rats were subsequently tested in the same context (vehicle-treated: n=12; FGF2-treated: n=11) whereas others were tested in a different context (vehicle-treated: n=13, FGF2-treated: n=12). Vehicle-treated rats received an additional 15 extinction trials during extinction training compared with FGF2-treated rats (data not shown). (b) Mean (±SEM) freezing by rats in response to the CS during test in Experiment 2.