Figure 1.

Intrageniculate axonal collaterals arising from lateral geniculate nucleus relay neurons. Ai, A digital image of a biocytin-filled lateral geniculate nucleus relay neuron with associated axon (arrow). Aii, Higher magnification of outlined area in Ai shows that the main axon gives rise to axon collateral (arrowhead). B, Different relay neuron with main axon that gives rise to axon collaterals in lateral geniculate nucleus. Bi, Low-power photomicrograph of relay neuron and its main axon (arrow). Bii, Increased magnification of main axon with two identified axon collaterals (outlined areas). Biii,Biv, Details of the two collaterals (arrowheads) outlined in Bii.