Fig. 3.

Contextual and cue fear in TrkB.T1^−/− mice. (a) Adult contextual fear. (b) Adult cue fear. (c) P29 cue fear. Mice were fear conditioned with three tone-shock pairings. Twenty-four hours later, mice were placed back in the conditioning chamber for contextual fear expression (a) or in a novel context for cue fear expression (b and c). Fear was measured as time spent freezing. All results are presented as a mean ± SEM determined from analysis of 8–12 mice per group.