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(FRAME-INFO (STRING "Primary Olfactory Cortex. \(Schematic drawing compliments of Dr. R. Thorne\). This figure diagrams the central projections of second-order olfactory neurons \(mitral and tufted cells; shown in blue\) located in the olfactory bulb.  Five structurally separate regions receive direct projections from second-order olfactory neurons of the olfactory bulb:  1.  The anterior olfactory nucleus \(a representative neuron of this nucleus is shown in red\) communicates information from one bulb to the other through the anterior commissure and is thought to play a role in localization of smell and its desensitization.  2.  The olfactory tubercle is bounded by the medial and lateral olfactory striae of the olfactory tract.  It receives input from and projects to brain regions that affect emotions, suggesting a possible role for this structure in evoking the emotions associated with certain smells.  3.  The piriform cortex \(along with a portion of cortical tissue overlying the amygdala called the periamygdaloid cortex\) is thought to be involved in olfactory perception and serves as an important relay to neocortical areas, such as the orbitofrontal cortex, that may mediate higher order processing of olfactory information, for example, the discrimination of different smells from one another.  4.  The amygdala may influence reproductive and feeding behavior by transmitting relevant olfactory information to the hypothalamus.  5.  The rostral entorhinal cortex, located within the rostral parahippocampal gyrus, may mediate memories of smells via connections with the hippocampal formation. "))