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FIG 4. The mean voxel volume of significant, within-subject BOLD increases in specific ROIs. Error bars show the between-subject standard error. Each plot shows activity changes for each task in an ROI. Stylized images on the left show the regions encompassed by each ROI for two axial sections. The volume of increase was greater for the concussed players (black) than for the control players (gray), particularly for sequencing tasks. Differences between groups were most prominent in frontal and parietal regions. Biman indicates bimanual; DSpan, digit span; Subt, subtraction.
