Source #1: http://education-portal.com/academy/lesson/the-amygdala-definition-role-function.html#lesson
[Every human brain has two amygdalae.]
Function Of The Amygdala:
The amygdala is responsible for the perception of emotions (anger, fear, sadness, etc.) as well as the controlling aggression. The amygdala helps to store memories of events and emotions so that an individual may be able to recognize similar events in the future. For example, if you have ever suffered a dog bite, then the amygdalae may help in processing that event and, therefore, increase your fear or alertness around dogs. The size of the amygdala is positively correlated with increased aggression and physical behavior.
The amygdala in humans also plays a role in sexual activity and libido (sex drive). It can change in size and shape based on the age, hormonal activity, and gender of the individual. For example, males who have low testosterone or who may have been castrated (had their testicles removed) tend to have smaller amygdalae, and in turn, may also have a lower sex drive.
Many physical structures of the human brain connect to and from the amygdala.
Amygdala is the integrative center for emotions, emotional behavior, and motivation.
Stimulation of the amygdala… can cause a panic attack. Panic attacks are brief spontaneously recurrent episodes of terror that generate a sense of impending disaster without a clearly identifiable cause.
Destructive lesions of the amygdala cause tameness in animals, and a placid calmness in humans characterized as a flatness of affect (undesirable lack of emotional response).
Amygdala is where memory and emotions are combined. When the reward is particularly sweet, that behavior and association may last a lifetime. Likewise, the trauma and humiliation of punishment may be remembered for a long time too.
The amygdala is involved in pleasureful emotional learning as well as fearful emotional learning.
The establishment of memories is a function of the entire brain network, and amygdala takes part in explicit memory.