Estimated fMRI responses aligned to trial end (t = 0) for sets of voxels of the voxelwise analysis. Location of the voxels is indicated by black ellipses in the brain slices in B. Effects were illustrated by averaging 7 neighboring voxels (center voxel plus 6 adjacent ones). The gray zone indicates the temporal window considered for analysis. A, Responses for the four experimental conditions. B, Temporal evolution of arousal and valence differential effects. Colored bars above plots indicate trial timing: play period (black), indication period (yellow), and blank screen (blue; variable length). FEF, Frontal eye field; MFG, middle frontal gyrus; OFC, orbitofrontal cortex.