Final answer:
The amygdala, a part of the limbic system, is the neural center that plays a central role in regulating emotions such as aggression and fear.
Step-by-step explanation:
The neural center in the limbic system that plays a central role in emotions such as aggression and fear is the amygdala. The amygdala is involved in the processing of emotional responses, classical conditioning, and attaching emotional value to memories.
It is composed of various subnuclei, with the basolateral complex being critical for classical conditioning and the central nucleus having a role in regulating attention and the activity of the autonomic and endocrine systems.