Fig 3. Task activation differences for hard - easy trials (collapsed across illusory/fragmented).

Opposite to the illusory-fragmented contrast, we found that harder trials generally elicited less activation throughout the brain relative to easier trials and the location of these significant activations overlapped little with the activations shown in Fig. 2. The illusory/fragmented a priori ROIs (black outlines) are shown for comparison purposes only and did not contain significant parcels.