Chronotopic organization of olfactory bulb axons in the lateral olfactory tract

H Yamatani, Y Sato, H Fujisawa… - Journal of Comparative …, 2004 - Wiley Online Library
H Yamatani, Y Sato, H Fujisawa, T Hirata
Journal of Comparative Neurology, 2004Wiley Online Library
The arrangement of axons in a tract can have a specific effect on the organization of
functional neuronal circuits. Here we describe olfactory bulb axons chronologically arranged
in the lateral olfactory tract. Newly differentiated projection neurons over the whole olfactory
bulb are similarly marked with transient expression of c‐kit protein. Their axons are
assembled together and project into the ventral superficial part of the tract, displacing the
older axons. This special assembly of the axons explains the nontopographic relationships …
Abstract
The arrangement of axons in a tract can have a specific effect on the organization of functional neuronal circuits. Here we describe olfactory bulb axons chronologically arranged in the lateral olfactory tract. Newly differentiated projection neurons over the whole olfactory bulb are similarly marked with transient expression of c‐kit protein. Their axons are assembled together and project into the ventral superficial part of the tract, displacing the older axons. This special assembly of the axons explains the nontopographic relationships between the olfactory bulb and the lateral olfactory tract axons that have been described in previous studies and could possibly influence the subsequent selection of the olfactory target areas by these axons. J. Comp. Neurol. 475:247–260, 2004. © 2004 Wiley‐Liss, Inc.
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