LIMBIC SYSTEM
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What is the Limbic System?
In our brains there are several primitive structures that give us important abilities that are needed for the survival of the species. The “limbic system” is that group of brain structures devoted to the ability to fight or run away in an emergency. The limbic system also helps us to remember events that caused strong emotions.

Where is the Limbic System?
Deep within the center of our advanced “thinking brain” (cerebral hemispheres), there is a primitive “emotion brain” (limbic system). The limbic system consists of several structures, including the amygdala (sometimes called the rage center), and the hippocampus (an important part of our memory system).

How does the Limbic System Work?
If someone were to be attacked, the limbic system would first produce fear and then perhaps rage. The fear would energize the body to help you to run away, if possible. If not, your limbic system might trigger a rage, which would prepare the body to fight in a ferocious manner, to protect yourself or your loved ones. Picture a mother bear protecting her cubs from a predator, and you will get the idea.

Why is the Limbic System Important for Neuropsychiatric Disorders?
Since this is our “emotion brain”, it is vulnerable to disorders in brain chemistry and in brain electrical activity. Some disorders run in families and are genetic in origin, while others are acquired by developmental brain damage (e.g.; drugs or alcohol used during pregnancy, or a difficult birth). A disorder in the “emotion brain” can produce emotions that are out-of-control. Extreme acts of violence, suicidal behavior, agitation, and mood swings can be due to disorders of this brain system.