Figure 1

Block design representing one of the five runs of the fMRI paradigm. Each run began with an instruction screen, and lasted for 4 minutes, comprised of 12 blocks of 20 seconds each. There were three blocks of food images, three blocks of visual baseline (blurred) images, and three blocks of each of two unrelated conditions, in pseudo-random order (the order of blocks in the run pictured was one of five pseudo-random sequences). Each run always began and ended with the visual baseline conditions. Within each 20-second block, 5 pictures were displayed for 3.5 seconds each, with a 0.5 second black fixation screen to separate the images