ROI analysis: posterior IPS. A, Areas showing significant preference for the near over the far condition in the real-hand experiment superimposed on a representative inflated right hemisphere. The white-filled circle represents the average location (center of gravity) of the ROI between subjects. B, Averaged hemodynamic response curves of the percentage signal change for the near condition (dark colors) and the far condition (light colors). For each subject, clusters of voxels showing significantly greater activation for the near (compared with the far) condition in the real-hand experiment (within the posterior IPS) were selected as the ROI. These clusters were then closely examined in the three other experiments. The gray background denotes the time of presentation of the visual stimuli (in seconds). Asterisks denote statistical significance between the averaged time courses: *p < 0.05; **p < 0.01. Note that the visual presence of the (dummy or real) hand modulates the response of the region to the visual stimuli.