Fig. 2.

Fmr1 KO mice have decreased cued, but not contextual, fear conditioning. a Acquisition of conditioned fear in WT and Fmr1 KO mice. Freeze time was measured as a percent of the trial block (2 min). Three shocks were presented to the mice followed by a 2-min interval. b Percent freeze time in contextual and cued testing 24–26 h after training. * p < 0.05, unpaired t test. c The effects of THIP administration 30 min prior to cued fear testing. * p < 0.05 vs. Fmr1 KO (control). ANOVA and Newman Keuls post hoc. n = 8 per group.