Extinction of conditioned fear to a tone paired with foot shock is thought to involve the
formation of new memory. In support of this, previous studies have shown that extinction of …

NMDA receptors are important for the acquisition, reconsolidation, and extinction of
memories. NMDA receptor antagonists impair these memory processes, whereas the partial …

Animal research suggests that the consolidation of fear and extinction memories depends
on N-methyl D-aspartate (NMDA)-type glutamate receptors. Using a fear conditioning and …

Much evidence indicates that extinction training does not erase memory traces but instead
forms inhibitory learning that prevents the expression of original memory. Fear conditioning …

Extinction of conditioned fear is an active learning process requiring N-methyl-D-aspartate
receptors (NMDARs), but the timing, location, and neural mechanisms of NMDAR-mediated …

Recent findings reveal qualitative developmental differences in extinction of learned fear.
The present study explored potential developmental differences in the role of NMDA in …

Contextual fear memory is attenuated by the re-exposure of mice to the context without
aversive stimulus. This phenomenon is called extinction. Here, we report that a potentiator of …

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 …

Consistent with the importance of the hippocampus in learning more complex stimulus
relations, but not in simple associative learning, the dorsal hippocampus has commonly …

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 …