The limbic system of the brain controls emotions, including fear, anger, happiness, and love. It is a group of interconnected structures located deep within the brain, and some key parts of it include the amygdala, hippocampus, limbic cortex, and hypothalamus

. The amygdala, which is part of the limbic system, is especially responsible for emotional processing, particularly fear and anxiety. It also connects emotions to memory and is a major processing center for emotions

. The amygdala constantly evaluates and integrates sensory information from the surroundings and assigns them appropriate values of emotional dimensions, such as valence, intensity, and approachability

. The hippocampus is strongly linked with memory and is activated in emotions such as fear and sadness

. The limbic system, including the amygdala and hippocampus, is involved in the experience and expression of emotions, as well as some automatic functions of the body