FIGURE 6.

Brain activations and deactivations evidenced in the Difficulty × Threat interaction. (a) Statistical parametric maps illustrating the interaction effects between mental workload and threat of stressors. The colored bar indicates the t‐value (+4 to −4) of the activation height. Cortical areas evidencing positive (red color) and negative (blue color) interactions are shown. Maps are thresholded at p < .05 FDR‐corrected. Activations are superimposed on a subject anatomical T1 scan, normalized to the standard MNI space. ACC, anterior cingulate cortex; DLPFC, dorsolateral prefrontal cortex; PC, parietal cortex; SMA, supplementary motor area; VMPFC, ventromedial prefrontal cortex. (b) Barplots show the percentage of BOLD signal increase/decrease at peak voxel for each of the four experimental conditions relative to rest condition. MNI coordinates are indicated. Error bars are SEM. Light gray = 0‐back, medium gray = 2‐back, plain bar = safe, striped bar = threat