FIGURE 25.

Biotinylated-dextran-amine (BDA) injection sites in V1 layer 4B viewed at lower power. Four “sunburst” (binocular) patterns of labeling, in control and 3-wk monkeys; and 4“skipping” (monocular) patterns in the 12- and 24-wk monkeys. Arrows in the “skipping” patterns indicate same-eye ocular dominance columns (ODCs; every-other-row of ODCs) labeled more intensely at low-power, corresponding to greater numbers of labeled neurons when viewed at higher-power. Sections (40 μm thick) cut tangential to the pial surface.