Effect of post-training amygdala lesions on neurochemical indices of the stress response in the m-PFC. A shows effect of post-training amygdala lesions on stress-induced DA utilization in the m-PFC. ***, Statistically significant difference versus the sham/no stress group,p < 0.001; ++++, statistically significant difference versus the sham/stress group, p < 0.0001. Bshows effect of post-training amygdala lesions on stress-induced 5-HT utilization and NE metabolism in the m-PFC. Animals were subjected to bilateral sham (SHAM) or excitotoxic lesions of the amygdala (AMYG-) 5 d after training. STRESS andNO STRESS indicate experimental conditions in which animals were or were not exposed to shock during conditioning, respectively. **, Statistically significant difference versus the sham/no stress group, p < 0.01; *, statistically significant difference versus the sham/no stress group, p < 0.05; +++, statistically significant difference versus the sham/stress group,p < 0.001; ++, statistically significant difference versus the sham/stress group, p < 0.01. Numbers inparenthesis indicate number of animals in each group.