Colour-coded polar maps of retinotopy in the visual wulst superimposed with iso-azimuth and iso-elevation lines.

<p>An azimuth (A) and an elevation retinotopic polar map (B) are superimposed by iso-azimuth and iso-elevation lines (for further explanations see text). In (C) iso-azimuth is plotted by brown lines, iso-elevation by green lines. The contours overlying the images have a spacing of 10°. The isolines drawn over dark blue regions correspond to lines running through the centre of the stimulus monitor (0° on colour coding). As indicated by the red and blue colour coding in (B), the retinotopic elevation activity patch only represents the upper monitor half. The monitor was horizontally centred at the angle of the fovea (60°), but the fovea was directed at a position below the horizontal centre line of the monitor and can thus not be mapped. The inset in (C) indicates the orientation of the activity patches within the visual wulst, viewed from above. c, caudal; l, lateral; m, medial; r, rostral. Scale bar (A) and (B) = 500 µm. Scale bar (C) = 250 µm. Monitor distance d = 25 cm, α = 80° (see <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0011912#pone-0011912-g001" target="_blank">Figure 1</a>).