Fig. 5.

Phase progressions within cortical areas and phase reversals between adjacent areas. Left: unthresholded, unsmoothed attention-related maps (subject MAS, right hemisphere). Black line indicates linear region of interest (ROI). Color wheel: angular position in the visual field. Right: response phase as a function of position along the black line. In each cortical area, the phases span the entire contralateral visual field. Vertical meridian representations occur at the boundaries between cortical areas and are associated with reversals of phase. Distances were measured in the folded cortical manifold (the boundary between the cortical white and gray matter) to avoid spatial distortions inherent in the flattening process (Dougherty et al. 2003).