Fig. 4

Coronal (a) and surface (b) views of reconstructed axon collaterals of a superficial pyramidal cell (SP-1 cell) located in the left hemisphere APC. a The position of the soma is indicated by a small dot, and that of the axon collaterals by thin solid or dashed lines. The Arabic numerals indicate the number of sections; the Roman numerals indicate the layer of the piriform cortex (PC). The solid lines indicate the axon collaterals distributed in the indicated areas within the represented sections as well as the adjacent sections. The dashed lines indicate collaterals running between these sections. Note that the axon collaterals are widely distributed within the PC and other olfactory areas and a long axon collateral projects to the granular cell layer of the olfactory bulb. b The small dot indicates the position of the soma. The collaterals (thin solid lines) extend to both rostral and caudal directions. The thick solid lines indicate the border between the areas of the cortical surface. The shaded area shows the lo. Scale bar = 1 mm