The six predefined regions in the experiment. The Motor region is a 12.8 mm. (high) by 15.6 ×15.6 mm2 region centered at Talairach coordinates +/−41,20,50 spanning Brodmann Areas 1,2, and 3. The posterior superior parietal lobule (PSPL) is a 12.8 mm. (high) by 12.5 ×12.5 mm2 region centered at Talairach coordinates +/−19,−68,55 in Brodmann Area 7. The horizontal intraparietal sulcus (HIPS) is a 12.8 mm. (high) by 12.5 ×12.5 mm2 region centered at Talairach coordinates +/−34,−49,45 in Brodmann Area 40‥ The Lateral Inferior Prefrontal Cortex (LIPFC) is a 12.8 mm. (high) by 15.6 ×15.6 mm2 region centered at Talairach coordinates +/−43,23,24 spanning Brodmann Areas 9 and 46. The Posterior Parietal Cortex (PPC) is a 12.8 mm. (high) by 15.6 ×15.6 mm2 region centered at Talairach coordinates +/−23,−63,40 spanning Brodmann Areas 7 and 39. The angular gyrus (ANG) 12.8 mm. (high) by 12.5 ×12.5 mm2 region centered at Talairach coordinates +/−41,−65,37 in Brodmann Area 39.