Maximum intensity projections (“glass-brain”) presentations of the voxel-wise results from the interhemispheric comparison analyses.

<p>Right>Left activation is shown on the right hemisphere side (marked “R”) while Left>Right activation is shown on the left side. <b>(a)</b> Left-to-right activation differences corrected for six different parameters (See text). <b>(b)</b> and <b>(c)</b> Differences that correlate positively with age and grey matter volume, respectively.