Amygdala

The amygdala is an almond-sized part of the brain, located in each hemisphere, that is best known for its role in emotional states. | last4It is physically connected to the caudate nucleus of the basal ganglia, but is often considered to be a separate anatomical structure from the basal ganglia. | last4It is located close to the medial temporal lobe and the hippocampus. It has been considered part of the limbic system.

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 * The Limbic System (2007) - Indian Journal of Psychiatry, includes the circuits involving the amygdala.