Final answer:
The limbic system is a set of brain structures responsible for regulating emotions, fear, motivation, and memory formation, which includes the amygdala and the cingulate gyrus.
Step-by-step explanation:
The group of structures in the brain that help to produce emotions and memories is collectively called the limbic system. This system regulates emotion, as well as behaviors related to fear and motivation. The limbic system plays a critical role in memory formation and includes several interconnected structures such as parts of the thalamus and hypothalamus, as well as the hippocampus.
An important structure within the limbic system is the amygdala, which is essential both for the sensation of fear and for recognizing fearful faces. Additionally, the cingulate gyrus within the limbic system helps to regulate emotions and pain.