Fig. 6.

SPMs of contrasts of event-related analyses.A, SPM of the F-contrast of three reward-related regressors of the task representing the height of reward bar change in reward bar height and their interaction. The Figure depicts significant (p < 0.0001, uncorrected) regional activity (shaded area) attributable to variance in these regressors. This contrast was used as an exclusive mask for data reported in event-related analyses. A similar mask was used for data reported in the covariance analysis with the threshold atp < 0.0001, uncorrected. The data are presented on a “glass brain.” B, SPM of significant activity (p < 0.0001, uncorrected) preceding SCR events (no mask present) corresponding to activity modeled with a hemodynamic response function occurring 4.2 sec before SCR event).C, SPM of significant activity (p < 0.0001, uncorrected) after SCR events (no mask present) corresponding to activity modeled with an HRF occurring 4.2 sec after SCR event and orthogonalized to the model used in B.D, SPM of significant activity (p < 0.0001, uncorrected) common to both generation and afferent representation of SCR, i.e., identified in a conjunction analysis of early and late SCR event-related activity. Figure shows unmasked SPM.