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. 2017 Apr 11;11:33. doi: 10.3389/fnana.2017.00033

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Copyright © 2017 Yamaguchi.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Cytoarchitecture of the olfactory tubercle (OT) and its putative functional domains representing distinct odor-induced motivated behaviors. A coronal section of the OT immunostained with anti-NeuN (a neuronal marker protein) antibody shows its three-layered structure (layers I, II and III) and involvement of cell-dense structures named cap compartments (white arrowheads) and Islands of Calleja (white arrows). An odor associated with reward activates the anteromedial domain of the OT and induces attractive behavior. An odor associated with punishment activates the lateral domain of the OT and induces aversive behavior. Individual OT domains receive inputs from the OB, amygdala (Amy), prefrontal cortex (PFC) and other OC areas, such as the piriform cortex (PC). M, medial; L, lateral; V, ventral; D, dorsal.