What is meant by amygdala
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a roughly almond-shaped mass of grey matter inside each cerebral hemisphere, involved with the experiencing of emotions
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The amygdala is an almond-shaped section of nervous tissue located in the temporal (side) lobe of the brain. There are two amygdalae per person normally, with one amygdala on each side of the brain. They are thought to be a part of the limbic system within the brain, which is responsible for emotions, survival instincts, and memory. However, this inclusion has been debated heavily, with evidence that the amygdalae function independently of the limbic system.
The amygdala is responsible for the perception of emotions such as anger, fear, and sadness, as well as the controlling of 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, or 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.
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