Fig. 5: The topographical relationships of the olfactory nerves running between the olfactory epithelium and olfactory bulb of the common marmoset.

a Sagittal and coronal sections depicting the nerve pathways from the olfactory epithelium to the olfactory bulb. The fibers are colored separately according to each olfactory filament. The Whole panels show all the depicted fibers, while the Septal and Turbinal panels show the septal and turbinal fibers, respectively. A anterior, L lateral, M medial, P posterior. b Schematic diagram showing the DTT-based olfactory nerve map for the marmoset (the distribution of the olfactory nerves running between the olfactory epithelium and olfactory bulb). Topographically, there was a correlation between the distributions in the olfactory epithelium and olfactory bulb in both the dorsal-ventral and medial-lateral axes. A anterior, P posterior.