FIG. 1.

Neural responses to backward-masked cannabis cues compared to neutral cues in the striatum of early and LO cannabis users (p<0.01, k>50 voxels). Representative fMRI sagittal, axial, and coronal brain slices analyzed in SPM8 and overlain on the MNI brain. Data are displayed neurologically (left is left). The color bars, which represent T values, indicating greater dorsal striatal responses in EOs are shown in red to yellow hues, and greater ventral striatal responses in LOs are shown in green to yellow hues. An interactive visual display of all brain data in all three planes can be found at http://franklinbrainimaging.com. EO, early onset; LO, late onset; SPM8, statistical parametric mapping.