Figure 2.

Brain section images at levels of the occipital cortex. (A) Fluorescent section image from cases 1 (green) and 2 (red). Green and red channel images taken with FITC and TRITC filters were overlaid. The + and − symbols indicate receptive field locations in the upper and lower visual fields, respectively, for each visual cortical area (Paxinos et al., 2012). Inset shows a higher magnification view. Some retrogradely labeled cells in V1 were indicated by arrows. (B) Myelin-stained section image. (C) Nissl substance-stained section image. (D–F) Images of brain sections from case 3 (red) slightly caudal from the sections in (A–C) shown in the same format as in (A–C) except that a far-red channel image (Cy5 filter) was used as a green channel and overlaid to enhance visibility of the projection by making the background autofluorescence appear yellowish, as in (A). The triangles indicate brain area borders. The bars indicate 5 mm.