PSY-B - Psychology PSY-B 320 Lecture Notes - Lecture 32: Paraventricular Nucleus Of Hypothalamus, Generalized Anxiety Disorder, Ventromedial Nucleus Of The Hypothalamus
28 Mar 2017
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Almond-shaped collection of nuclei located within the limbic system. Plays a role in emotional and species-specific behaviors. Sends projections primarily to the hypothalamus (influences autonomic and hormonal responses) and brainstem. Kl ver-bucy syndrome (removal of or damage to amygdala: symptoms in monkeys. Tameness and loss of fear (this demonstrates how essential the amygdala is to the survival of a species) Tendency to examine all objects by mouth. Greatly increased autoerotic, homosexual, and heterosexual activity with inappropriate object choice. Tendency to attend to and react to every visual stimulus. Plays a key role in controlling executive functions such as planning movements. Plays a role in specifying the goals toward which movement should be directed. Receives connections from the amygdala, the dorsomedial thalamus, the posterior parietal (sensory association) cortex, and the dopaminergic cells of the ventral tegmental area: dopaminergic input influences how prefrontal neurons react to stimuli, especially emotionally arousing stimuli.
