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AmygdalaThe amygdala (Latin, corpus amygdaloideum) is an almond-shape set of neurons located deep in the brain's medial temporal lobe. Shown to play a key role in the processsing of emotions, the amygdala forms part of the limbic system. In humans and other animals, this subcortical brain structure is linked to both fear responses and pleasure. Its size is positively correlated with aggressive behavior across species. In humans, it is the most sexually-dimorphic brain structure, and shrinks by more than 30% in males upon castration. Conditions such as anxiety, autism, depression, post-traumatic stress disorder, and phobias are suspected of being linked to abnormal functioning of the amygdala, owing to damage, developmental problems, or neurotransmitter imbalance. 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They lie at the sides of the brain, beneath the lateral or Sylvian fissure. Seen in profile, the human brain looks something like a boxing glove. The ... > full article Limbic system -- The limbic system is the collective name for structures in the human brain involved in emotion, motivation, and emotional association with memory. It affects motivation and is more active in ... > full article Hypothalamus -- In mammals, the hypothalamus is a region of the brain located below the thalamus, forming the major portion of the ventral region of the diencephalon and functioning to regulate certain metabolic ... > full article Occipital lobe -- The occipital lobe is the visual processing center of the mammalian brain. 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During this stage, the activity of the brain's neurons is quite similar to that during waking ... > full article Amnesia -- Amnesia (or amnaesia in Commonwealth English) is a condition in which memory is disturbed. The causes of amnesia are organic or functional. Organic causes include damage to the brain, through trauma ... > full article This page refers to an article that is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Amygdala". View this article at Wikipedia.org - Edit this article at Wikipedia.org. Wikipedia articles are exempt from any compilation copyright held by this site or the editor, as specified on the Wikipedia:Copyrights page. Please note that the Wikipedia copyright and related information apply only to Wikipedia articles -- i.e., those that ScienceDaily explicitly links to on the Wikipedia web site. 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