Definition of the Amygdala and Overview of Terminology Classically, the humanamygdalahas been regarded as a group of heterogenous nuclei in the mesiotemporal region of the temporal lobe. However, this simple anatomical view of theamygdalabased on the close topographical relationship of its divisions is...
The direct pathway is thought to function in two ways: first as a quick route for simple stimulus features to evoke defensive emotional responses; and second as a method of priming the amygdala to set up appropriate emotional responses to incoming stimuli that are more highly processed by the ...
We have interpreted our amygdala RSFC group difference findings based on the clinical features of MDD and what is known about the function of the implicated brain regions. However, these interpretations of our observational data should be considered preliminary and speculative. Confirmation of the ...
First a definition and theory of emotion and its functions are provided, and then key brain regions involved in emotion are considered, including the orbitofrontal cortex, anterior cingulate cortex, amygdala, striatum, the dopamine system, and the insula. A definition of emotion A clear working def...
perhaps the amygdala–OFC interaction mediates a value-updating function during selective satiation. A failure to register the change in food value would ultimately lead to the impairment observed on the devaluation task. Alternatively, perhaps the value-updating process remains intact, but there is an...
STRESS INDUCES STRUCTURAL REMODELING IN THE PFC Findings in the hippocampus have also provided a gateway into another important brain region involved in stress and stress-related behaviors, namely, the PFC, which is impor- tant for working memory, executive function, and self- regulatory behaviors ...
Within each batch of rats, the cage containing the lightest three rats was designated as the partner-cage and the cages containing the remaining nine rats were designated as actor-cages (see below for a definition of actor and partner rats). We assigned the lightest rats as partner rats ...
Although most studies do not differentiate between LA and BA interneuron populations, region-specific interneuron function during aversive learning is likely. Given that sensory brain areas preferentially target the LA 12, 13, 66, interneurons in this subnucleus are in an ideal position to control ...
Input stimulus functions, defined for the punctate and visual stimuli, were convolved with the canonical hemodynamic response function (mean lag 6 seconds, full width at half maximum 6 seconds) to yield regressors of interest for the general linear model. Individual time-series statistical analysis ...
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