Figure 4.

Right hemispheric dominant activations evoked by detection of targets, from the group Hemisphere by Time ANOVA map, corrected for multiple comparisons. The color bar indicates the equivalent z-score for the p value from the ANOVA. The statistical maps were masked so that right hemisphere (unflipped) voxels were only included if their activation magnitudes were positive. The magnitude corresponding to the time course at a voxel was computed using a standard hemodynamic response function (Boynton et al., 1996). The color bar indicates the equivalent z-score for the p value from the ANOVA. The graphs show the time course of activation to cues for right hemisphere voxels (unflipped) and the corresponding left hemisphere voxels (flipped), broken down by target visual field. sup, Superior; med, medial; pos, posterior; cing, cingulate; Hem, hemisphere.