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Voxel-wise correlation results showing white matter regions with a significant inverse relationship between the Barratt Impulsiveness Scale score and fractional anisotropy (cocaine users only).
| Brain region | Cluster size (cm3) | Average p-value | Pearson r-value | Talairach Coordinates (xyz) |
|---|---|---|---|---|
| Left Internal capsule | 0.92 | .022 | −.512 | −25 −23 12 |
| Genu, corpus callosum | 0.23 | .023 | −.507 | 9 −40 10 |
| Body, corpus callosum | 0.21 | .026 | −.499 | −10 9 22 |
