Within the limbic system, the amygdala plays a key role in and the hippocampus plays a key role in

To complete the statement above:

Within the limbic system, the amygdala plays a key role in aggression and the hippocampus plays a key role in memory.

The essential structures of the limbic system incorporate the amygdala, hippocampus, thalamus, hypothalamus, basal ganglia, and cingulate gyrus. The amygdala is the feeling focus of the cerebrum, while the hippocampus assumes a fundamental part in the arrangement of new recollections about past encounters.