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amygdala
(redirected from Lizard brain)

    Also found in: Medical, Wikipedia 0.02 sec.

amygdala

Almond-shaped region of the brain adjacent to the hippocampus, that links the cortex, responsible for conscious thought, with the regions controlling emotions. It is involved in interpreting fear-provoking information and linking it to fear responses. For example, where the amygdala is damaged, patients are unable to recognize fearful expressions.

Emotionally charged events are more easily recalled than neutral events, and in 1996 US researchers demonstrated a link between the amygdala and the memorizing of emotionally loaded images.

The amygdala is involved in assessment of character in unfamiliar people by using knowledge of past experiences to determine whether a person is, for example, trustworthy or friendly. Those people with damaged amygdalas were found, in a 1998 study, to be unable to make these judgements.
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