Specific behaviors during auditory fear conditioning and postsynaptic expression of AMPA receptors in the basolateral amygdala predict interindividual differences in fear generalization in male rats

Amygdala punches for BLA tissue collection. In order to analyze the expression of AMPARs at amygdala synapses, we collected amygdala tissue from selected animals with a 1-mm hollow needle directed at the basolateral amygdala nuclei (BLA). Here we show a representative microscopy image of a rat brain slice after punching, illustrating that most of the tissue was collected from the BLA and lateral amygdala (LA) while sparing other nuclei, including the central (CeA) and the basomedial (BMA) nuclei.