Fig. 2From: Prior observation of fear learning enhances subsequent self-experienced fear learning with an overlapping neuronal ensemble in the dorsal hippocampusThe hippocampus is involved in observation-induced enhancement of fear learning. a TTX was infused into the hippocampus before observation of fear conditioning on day 1. b TTX infusions into the hippocampus before observation of fear conditioning impaired observation-induced enhancement of fear learning. Vehicle: n = 7, TTX: n = 8. Student’s t-test, t13 = 2.3, *P = 0.037. c TTX was infused into the hippocampus before self-experienced fear conditioning on day 2. d TTX infusions into the hippocampus before self-experienced fear conditioning impaired observation-induced enhancement of fear learning. Vehicle: n = 7, TTX: n = 7. Student’s t-test, t12 = 5.7, *P < 0.0001. Values are reported as mean ± SEMBack to article page