Figure 5

NMDA receptors in the amygdala is required for auditory fear memory induced by ACC stimulation. (a) Bilateral microinfusions of AP-5 (2 μg/μl, 0.5 μl/side) in the BLAC 15 min before conditioning impaired auditory fear memory but no effect on contexual fear memory when tested 1 day later. Filled bars, AP-5 group (n = 5); open bars, saline group (n = 4). * P < 0.05 compared with saline-injected group. (b) Stimulation sites in ACC. Filled circles, AP-5 group; open circles, saline group. (c) Microinjection sites in the BLAC on the schematic representation of coronal section 1.94 mm posterior to the Bregma. Filled circles, AP-5 group; open circles, saline group.