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Statistical parametric maps of changes in brain activation over the course of 1 year for human immunodeficiency virus (HIV)–positive (left) and seronegative (SN) participants (center) for the four-ball tracking task. HIV patients showed greater BOLD signal increases at 1 year compared with SN participants (right). Clusters with greater than 300 voxels and p corrected < 0.05 (voxel level) are shown.
