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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.
Certain structures of the limbic system are involved in memory as well. Two large limbic system structures, the amygdala and hippocampus, play important roles in memory. The amygdala is responsible for determining what memories are stored and where the memories are stored in the brain.