The Limbic System

"The limbic system is a complex set of structures that lies on both sides and underneath the thalamus, just under the cerebrum. It includes the hypothalamus, the hippocampus, the amygdala, and several other nearby areas. It appears to be primarily responsible for our emotional life, and has a lot to do with the formation of memories" (Boeree, 2002).
A picture of the Structures in the Limbic system

Parts of the Limbic System
  • Hypothalamus: The Hypothalamus is primarily in charge of homeostasis throughout the body. It is responsible for regulating your hunger, thirst, response to pain, levels of pleasure, sexual satisfaction, anger and aggressive behavior, and many other functions in your body.
  • Hippocampus: The Hppocampus is in control of converting memories in your short term to long term memorys. If the Hippocampus is damaged we are unable to form new memories but our older memories are left alone. This is shown in the movie Memento
  • Amygdala: The Amygdala controls aggression through electrical stimuli. When removed subjects not only do not exhibit an a aggression response but other responses; for example when removed, animals also become indifferent to stimuli that would have otherwise have caused fear and even sexual responses.
  • Pituitary: The pituitary gland secretes hormones that maintain homeostasis. The Pituitary gland is connected to the Hypothalamus.

1Boeree, G. (2002). The Emotional Nervous System . Retrieved November 5, 2008, from
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