Conversation versus Repetition. A test for the main effect of Task, across all whole-brain connectedness values from both groups, revealed a number of areas that showed greater whole-brain involvement during Conversation compared with the Repetition condition. The strongest of these results were frontal and temporal areas (especially left temporal pole), the left temporoparietal junction, and bilateral dorsomedial prefrontal cortex. Voxels significant at P < 0.001 are plotted on an inflated Freesurfer standard surface (Fischl et al., 2002).