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BENEATH THE CORTEX What is the limbic system?

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The limbic system is centrally involved in our emotions. The term was first introduced by American neuroanatomist James Papez (1883–1958) in 1937 and refers to a group of brain structures in the middle of the brain. The original Papez circuit included the hippocampus, the fornix, the mammillary bodies, the anterior nucleus of the thalamus, and the cingulate gyrus. Over time the boundaries of the limbic system were expanded, although the exact definition of the limbic system is still not universal. For our purposes, however, we can include the amygdala, hippocampus, septum, and cingulate gyrus. These regions are all involved with emotional and motivational processing. Although the hypothalamus is technically classified with a brain region called the diencephalon, we include it here because its functions are tightly connected to the other limbic structures.

The Handy Psychology Answer Book

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