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. Author manuscript; available in PMC: 2016 Jul 2.
Published in final edited form as: Cell. 2015 Jul 2;162(1):134–145. doi: 10.1016/j.cell.2015.06.027

Figure 6. The exogenous activation of a learned aversive CS representation can drive freezing behavior, whereas the exogenous activation of an unlearned CS representation cannot.

Figure 6

A. Behavioral protocol for the reactivation of learned and unlearned CS representations in the BLA. B. Percent of time spent freezing in response to optical stimulation of the CS representation in the BLA (CS paired ChR2 25.22±2.25%, n=9; CS unpaired ChR2 9.93±1.40%, n=10; CS paired GFP 9.98±1.36%, n=6; CS unpaired GFP 9.59±1.50%, n=6. One-way ANOVA, F3,26=20.10, P<0.00001).