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. 2002 Oct 15;22(20):9113–9121. doi: 10.1523/JNEUROSCI.22-20-09113.2002

Fig. 1.

Fig. 1.

Nifedipine does not affect cue fear acquisition.A, Experimental design (7–8 mice per group).Open circles, Vehicle; filled circles, nifedipine. B, Freezing during the five cues that preceded each shock for mice injected with nifedipine (40 mg/kg dose shown, 20 min pretreatment) or vehicle. C, Freezing 24 hr later during a 2 min, drug-free CS test. D, Freezing during the five cues that preceded each shock for mice injected with nifedipine (40 mg/kg dose shown, 50 min pretreatment) or vehicle. Also included is freezing during the 2 min stimulus-free period after the last CS–US pairing (Ctxt). E, Freezing 24 hr later during a 2 min acclimation period (Pre-CS), followed by a 2 min, drug-free CS test. F, Freezing during a 2 min, drug-free CS test, 24 hr after injections (50 min pretreatment) and a single cue–shock pairing. *p< 0.05 versus vehicle.