Figure 2.

Gray matter changes in the longitudinal group (n = 10) between the first two scans (before the operation and 6–8 weeks after the operation) with the third scan (pain free 16–18 weeks after the operation). Each box plot represents relative gray matter percentage signal change over time and 90% confidence interval (gray line) averaged over the cluster of the dorsolateral prefrontal cortex (A), amygdala (B), S2 cortex (C), insular cortex (D), brainstem (E), and anterior cingulate cortex (F). C.I., Confidence interval.