Fig. 3.

fMRI results. (A) The location of the SC, defined using anatomical boundaries on the group T1 standard brain, are shown in coronal and sagittal planes. (B) The SC responded to visual stimulation. Statistical maps computed from data without PNM revealed activity in the right SC only. The pattern of activation was modified when including a PNM, to include activity in the SC bilaterally. The statistical maps show significant clusters of voxels within a colliculi mask (determined using non-parametric permutation testing with a corrected threshold of p < 0.05 and a nominal T-value of 2.3) The T-values of the voxels within significant clusters are indicated by the legends. The top panel (red-yellow) shows unilateral SC activity revealed using a traditional analysis. The lower panel (blue-light blue) shows bilateral SC activity revealed using the PNM analysis.