fMRI activation voxels showing activity in specific parts of the brain. (A,B) Comparison of fMRI before and after virtual reality-based training using a 2D stimulus (brain axial section set). The paradigm involved changing the Titmus 2D test and fixation image. See decreased activity in the frontal, parietal, and occipital lobes after treatment. (C,D) Comparison of fMRI before and after virtual reality-based training using a 3D stimulus (brain axial section set). The paradigm involved changing the Titmus 3D test and the fixation image. See decreased activity in frontal, parietal, and occipital lobes after treatment.