The limbic system is a circuit of midline structures which circles the thalamus. It's involved in the regulation of "motivated behaviors," such as flight, eating, anger and sex.
- Amygdala
- The amygdala is involved directly in agression and agressive response to situations. When damaged in primates, it will generally cause a creature to fall to the boddom of the pecking order.
- Hippocampus
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The Hippocampus is a unique structure-- it's not a nucleus but more like a sheet of neurons that's been rolled up into a jelly-roll. It's used to facilitate the consolidation of new memories. Without it, very little new memory can be acquired.
- Fornix
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The fornix is the major tract of the limbic system.
- Cingulate Cortex
- A large area of neocortex. The anterior region is responsible for emotional reaction to pain.
- Septum
- The septum is a nucleus in the limbic system which regulates anger and pleasure. Experiments with rats show that when the septum is activated, reactions can be extremely strong.
- Mammillary Bodies
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