Figure 2.

Extractions of parameter estimates of peak foci for group by drug interactions (a) demonstrate the effects of lorazepam (LRZ) reducing blood oxygenation level-dependent (BOLD) signal in the healthy control subjects (Ctrl), whereas increasing it for the psychosis subjects (Schiz). Extractions from foci showing main effects of drug (b) show similar reductions of BOLD signal in the right middle occipital gyrus, but less in the Schiz subjects for the left middle occipital gyrus. Ordinate on all graphs indicates parameter estimates in arbitrary units (± SEM).