Activation maps per group per attention task. The attention tasks elicited greater response in widespread areas in both the healthy participants (HP) and the presumed obligate carriers (POCs). There were no areas with greater activation during rest compared to the attention trials in either group. Right hemispheric activations are on the left side of the images. For ease of comparison across groups and across tasks, activations are displayed on axial images and thresholded at z = 3.0.