Figure 6.

Neural response to unexpectedly receiving a sweet stimulus compared with unexpectedly receiving a tasteless solution. A sagittal section shows neural response in right dorsal AI to unexpectedly receiving a sweet stimulus specifically ([UnSwt − ExpSwt] − [UnTless − ExpTless]). The bar graphs show (on the y-axis) the percentage signal change for the expected (dark gray bars) and unexpected (light gray bars) events (±SEM), averaged over subjects. Stimuli are shown on the x-axis. The response was taken from the voxel that responded maximally within the significant cluster, as identified in the SPM analysis. The color bar depicts T values.