Figure 1.

Effect of TMS on PPC in predictable and unpredictable contexts, from Chao et al. (2011). The Y axis denotes the range of saccade curvatures, where negative numbers indicate less curvature toward the distractor. Panel (A) shows that PPC TMS decreased saccade curvature toward the distractor when distractor location is unpredictable, whereas Panel (B) shows that PPC TMS had no effect when distractor location can be predicted in advance. This suggests a critical role for the right PPC in attentional capture, and how predictability can modulate PPC involvement.