Figure 3.

Spatial specificity of attention-related activations. A, B, Voxels within frontal cortex (A) and parietal cortex (B) were separated according to memory-guided saccade phase, to the upper left (UL), lower left (LL), upper right (UR), or lower right (LR) visual field. The average pairwise correlation was then computed between spatial attention time series of voxels within the same ROI or between time series of voxels within different ROIs. Each graph represents the correlation values averaged across subjects in a group correlation matrix.