amygdala(redirected from Lizard brain)
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n. pl. a·myg·da·lae (-lē)
Either of two small, almond-shaped masses of gray matter that are part of the limbic system and are located in the temporal lobes of the cerebral hemispheres. Also called amygdaloid nucleus.
[Latin, almond, from Greek amugdalē.]
n, pl -lae (-ˌliː)
(Anatomy) anatomy an almond-shaped part, such as a tonsil or a lobe of the cerebellum
[C16: from Medieval Latin: almond]
a•myg•da•la(əˈmɪg də lə)
n., pl. -lae (-ˌli)
any of various almond-shaped anatomical parts, as a brain structure of the limbic system that is involved in emotions of fear and aggression.
[1840–45; < New Latin < Latin: almond < Greek amygdálē; compare almond]
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|Noun||1.||amygdala - an almond-shaped neural structure in the anterior part of the temporal lobe of the cerebrum; intimately connected with the hypothalamus and the hippocampus and the cingulate gyrus; as part of the limbic system it plays an important role in motivation and emotional behavior|
temporal ccortex, temporal lobe - that part of the cerebral cortex in either hemisphere of the brain lying inside the temples of the head
basal ganglion - any of several masses of subcortical grey matter at the base of each cerebral hemisphere that seem to be involved in the regulation of voluntary movement