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Statistical parametric map (thresholded atz > 4.63; p < 0.05 corrected for multiple comparisons) showing voxels with significant incremental rCBF response to increasing task demand superimposed on sagittal (a) and axial (b) views of a normalized representative subject's brain. Voxel with highest covariance: x = 38, y = 24, z = −4; z = 6.42; p < 0.0001.
