Figure 4.

Model-free Analyses of Brain Activations

Ventral striatum (left) and visual cortex (right) correspond to voxels surviving familywise error correction on statistical parametric maps.

(A) Regression coefficients. Histograms represent contrasts of the reward (green) or the punishment (red) condition with the neutral condition, at the times of cue and outcome display. For every contrast the two joint histograms correspond to the first (empty) and second (filled) halves of the conditioning sessions.

(B) Time courses. BOLD responses were averaged across trials over conditioning sessions, for the reward (green) and punishment (red) conditions, relative to the neutral condition. Bars are ± intersubjects standard errors of the mean.