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|Noun||1.||olfactory brain - a center in the cerebral hemispheres that governs the sense of smell in lower animals; in humans it seems to mediate complex emotional behavior|
nerve center, nerve centre, center, centre - a cluster of nerve cells governing a specific bodily process; "in most people the speech center is in the left hemisphere"
piriform area, piriform lobe, pyriform area, pyriform lobe - pear-shaped neural structure on either side of the brain in the rhinencephalon
olfactory bulb - one of two enlargements at the terminus of the olfactory nerve at the base of the brain just above the nasal cavities
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