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  • Title: Convergence of main and accessory olfactory pathways onto single neurons in the hamster amygdala.
    Author: Licht G, Meredith M.
    Journal: Exp Brain Res; 1987; 69(1):7-18. PubMed ID: 3325300.
    Abstract:
    Chemoreceptor pathways from the vomeronasal organ (VNO), and main olfactory system are known to be separate as they pass into the brain, at least until the level of the amygdala. In the amygdala, vomeronasal pathways project to the posteromedial cortical nucleus (PMCN), and medial nucleus (MN). The main olfactory pathways have terminations in the posterolateral cortical nucleus (PLCN), and anterior cortical nucleus (ACN), both of which project to the PMCN and MN. The anatomy thus suggests that the PMCN and MN are sites for convergence of input from the main and accessory olfactory pathways. We have recorded single units in the amygdala and found that electrical stimulation of either the main olfactory bulbs or the VNO could drive some of the same units in the PMCN. Units were also found that were driven by one system but not the other, and units in which activity driven by one system was suppressed by stimulation of the other system.
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