Extract (noun). a draught or copy of writing; certified copy of the proceedings in an action and the judgement therein, with an order for execution. Origin: [L. extractus, p. p. of extrahere to extract; ex out + trahere to draw. See Trace, and cf.
One long-standing idea is that the amygdala consists of an evolutionarily primitive division associated with the olfactory system (cortical, medial and central nuclei) and an evolutionarily newer division associated with the neocortex (lateral, basal, and accessory basal nuclei).tructural and/or functional changes in the amygdala are associated with a wide variety of psychiatric conditions in humans. Included are various anxiety disorders (PTSD, phobia, and panic), depression, schizophrenia, and autism, to name a few.
The role of the amygdala is to set off fear and anger instantly, without conscious thought, so that a person can freeze or run away from danger, Dr. Young said. But the emotion of fear does not reside exclusively in the amygdala because it can be elicited from memory and other brain states.