Fig. 8: The topographical relationships of the human olfactory nerves running between the olfactory epithelium and olfactory bulb.

a Sagittal sections depicting the nerve pathways from the olfactory epithelium to the olfactory bulb. The fibers are colored separately according to each olfactory filament. The field-of-view was limited to the red frame shown in the schema due to the restricted size of the magnetic resonance imaging system. The Whole image is a combination of the other three images. MT middle turbinate, ST superior turbinate. b Tractography performed with a cryoprobe. The field-of-view was limited to the green frame shown in the schema. The fibers are colored separately according to each olfactory filament. c Schematic diagram showing the DTT-based olfactory nerve map for the human (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.