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The limbic system is a set of brain structures located on both sides of the thalamus, immediately beneath the cerebrum. It has also been referred to as the paleomammalian cortex. It is not a separate system but a collection of structures from the telencephalon, diencephalon, and mesencephalon.
The temporal lobes are involved in hearing and speech. And the occipital lobes are involved in sight. The reptilian brain contains several structures comprising the limbic system. Thirty years ago brain scientists believed that this area of the brain was exclusively dedicated to the processing of emotions. Yet now we know that the limbic system has intricate connections with the frontal lobes.