Figure 13.

Distribution of V1 connections in cortex and thalamus for normal, transplanted, and degenerated rats. A, The number of neurons retrogradely infected locally (within 300 μm of the injection site) in V1 following injections of glycoprotein-deleted rabies virus were averaged across cases within the three rat groups. B, The percentage of infected neurons in the LGN, LP, higher visual cortex, and at long range in V1 (>300 μm from injection site) are shown for the three rat populations. For each case, percentages were derived by dividing the number of infected cells in each brain region by the number of cells found locally in V1. The same cases were used for A and B; normal (n = 4), transplant (n = 5), and degenerated (n = 4) rat groups. p values are given where significant differences between groups were found.