Fig. 3.

Right hemisphere attention-related maps in parietal cortex for all 4 subjects. Left column: flattened representations of posterior parietal cortex. Cyan curve, intraparietal sulcus (IPS); yellow curve, transverse occipital sulcus (TOS). Right column: fMRI response phases with cortical area boundaries superimposed (same format as Fig. 2). Indicated areas V3A, V3B, and V7 were defined using stimulus-based retinotopic mapping. Proposed IPS1 and IPS2 areas were defined based on the attention-mapping results. Coherence thresholds were chosen separately for each hemisphere and are displayed next to the thresholded phase maps. For each map, the P value corresponding to the chosen coherence threshold is also shown. Arrows indicate visual field orientation, pointing toward the upper vertical meridian and away from the lower vertical meridian representation. Scale bars, about 1 cm.