Figure 3 - The methamphetamine-induced psychosis group had lower absolute n-acetyl-aspartate with n-acetyl-aspartyl-glutamate (NAA+NAAG) in the A) left dorsolateral prefrontal cortex (DLPFC) (p<0.05) and B) left frontal white matter (FWM) (p<0.05) compared to the control group. Neurometabolite concentrations are reported as ratios to total creatine.