24 Chemosensory cues signalling predators reliably stimulate innate defensive responses in 25 rodents. Despite the well documented role of the amygdala in predator odor-induced fear, 26 the relative contribution of the specific nuclei that comprise this structurally heterogeneous 27 structure is conflicting. In an effort to clarify this we examined neural activity, via 28 electrophysiological r...

The amygdala and hippocampal complex, two medial temporal lobe structures, are linked to two independent memory systems, each with unique characteristic functions. In emotional situations, these two systems interact in subtle but important ways. Specifically, the amygdala can modulate both the encoding and the storage of hippocampal-dependent memories. The hippocampal complex, by forming episod...

Here we show inverse fMRI activation patterns in amygdala and medial prefrontal cortex (mPFC) depending upon whether subjects interpreted surprised facial expressions positively or negatively. More negative interpretations of surprised faces were associated with greater signal changes in the right ventral amygdala, while more positive interpretations were associated with greater signal changes ...

People show medial prefrontal cortex and superior temporal sulcus (STS) activation when making dispositional attributions to other people (Harris, Todorov, & Fiske, 2005) under conditions predicted by Kelley’s (1972) ANOVA model. Here, participants make dispositional attributions to entire categories of objects under similar conditions; they also show greater activity in STS (implicated in perc...

Stereotaxic lesions in either or both amygdala did not impair verbal learning ability (presented by ear as a paired-associates test). Centre median lesions alone did not impair this form of learning; however, when combined with a left amygdala lesion a significant decrease in scores occurred which persisted for up to two years after operation. The data support a hypothesis that medial thalamic ...