Functional MRI responses to low vs. high PS (regardless of picture valence).

<p>Brain regions significantly less activated in low PS subjects compared to high PS subjects: The locus coeruleus, insula, and amygdala. Functional results are displayed on the mean structural MR image of subjects normalized to the MNI stereotactic space (display at p, 0.001, uncorrected). Parameter estimates are calculated for neutral (Neu) items for both subject groups. Arbitrary units, error bars: SEM.