Extinction of conditioned fear involves new learning that inhibits but does not eliminate the
original fear memory. This inhibitory learning is thought to require activation of NMDA …

Ample evidence suggests that activation of NMDA receptors (NMDAr) in the basolateral
complex of the amygdala (BLA) is necessary for context fear conditioning. The present …

We studied the roles of the basolateral amygdala (BLA) and the medial prefrontal cortex
(mPFC) in learning and relearning to inhibit context conditioned fear (freezing) in extinction …

Fear extinction, which involves learning to suppress the expression of previously learned
fear, requires N-methyl-D-aspartate receptors (NMDARs) and is mediated by the amygdala …

N-methyl-D-aspartate receptors (NMDARs) contribute to synaptic plasticity underlying
learning in a variety of brain systems. Fear extinction, which involves learning to suppress …

Glutamate receptors in the basolateral complex of the amygdala (BLA) are essential for the
acquisition, expression and extinction of Pavlovian fear conditioning in rats. Recent work …

NMDA receptors in the amygdala seem to be critical for fear conditioning in naive rats.
Recent spatial-learning studies suggest that previous learning protected animals from the …

We studied the neural substrates of higher-order conditioned fear in rats. We first studied
acquisition and extinction of second-order fear. One stimulus (S1) was paired with a …

The basolateral amygdala (BLA), consisting of the lateral and basal nuclei, is considered to
be essential for fear learning. Using a temporary inactivation technique, we found that rats …

Evidence from previous studies indicates that the noradrenergic and GABAergic influences
within the basolateral amygdala (BLA) modulate the consolidation of memory for fear …