Figure 3: Attention biases the orientation preference map.

(a) Preferred orientation from one subject, coded by colour and measured during No-Cue task, plotted on a medial view of occipital cortex. Inset is a flattened representation of the occipital pole. Greater colour saturation indicates a higher certainty in preference estimate. Orientation selectivity was greatest along gyri, likely due to the use of a surface coil. (white scale bar, 2 mm; black line, calcarine sulcus). (b,c) As a, with orientation preference measured during the attention conditions. Attention increased the extent of orientation-selective activity across the occipital cortex (top) and biased population orientation preferences at the hyper-columnar scale (bottom).