Dictionary of Biological Psychology
A large structure on the ventral surface of the anterior pole of the brain, whose relative size compared to the rest of the brain varies greatly across species. It is for example relatively small in humans, relatively large in RODENTS and other animals for whom OLFACTION is a major source of sensory input.
It receives information from the OLFACTORY EPITHELIUM via the OLFACTORY NERVE. It sits on a bone at the base of the brain called the CRIBRIFORM PLATE. From the olfactory bulbs, neurons project via the OLFACTORY TRACT to various structures important for integrating olfactory information with other sources of information, including the PYRIFORM CORTEX, THALAMUS and ORBITOFRONTAL CORTEX.
See also: accessory olfactory bulb; olfactory glomeruli
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