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Table 4. 

Whole-brain Analysis of Colateralization with the mFG

Brain Area
Coordinates
Voxel
Cluster
x
y
z
puncorr.
pFWE-corr.
t(173)
pcorr.
Calculation Asymmetry Regressed by the Reading mFG LI 
puncorr. < .01 
  Postcentral gyrus −21 −39 66 <.001 .864 3.90 .050 
  Superior parietal gyrus −24 −66 54 <.001 .999 3.46 .080 
  Precuneus 9 63 54 <.001 1.0 3.46  
 
 x y z puncorr. pFWE-corr. t(208) pcorr. 
Reading Asymmetry Regressed by the Calculation Precuneus LI 
puncorr. < .01 
  Mid-frontal gyrus −45 15 51 <.001 .275 4.38 .030 
  Mid-frontal gyrus −48 −3 57 <.001 .596 4.11  
Brain Area
Coordinates
Voxel
Cluster
x
y
z
puncorr.
pFWE-corr.
t(173)
pcorr.
Calculation Asymmetry Regressed by the Reading mFG LI 
puncorr. < .01 
  Postcentral gyrus −21 −39 66 <.001 .864 3.90 .050 
  Superior parietal gyrus −24 −66 54 <.001 .999 3.46 .080 
  Precuneus 9 63 54 <.001 1.0 3.46  
 
 x y z puncorr. pFWE-corr. t(208) pcorr. 
Reading Asymmetry Regressed by the Calculation Precuneus LI 
puncorr. < .01 
  Mid-frontal gyrus −45 15 51 <.001 .275 4.38 .030 
  Mid-frontal gyrus −48 −3 57 <.001 .596 4.11  

Brain areas where the leftward asymmetry during calculation was significantly predicted by the lateralization index of the mFG during reading (whole left hemisphere analysis). Regression was performed on the images of asymmetry during calculation, pooled over visual and auditory trials. For an exhaustive description of the regression, we reported for each case statistical mapping results with a voxel threshold of .01 and .05 as a corrected threshold for cluster extent (except for the superior parietal gyrus reported in ROI analysis). The bottom part of the table reports the converse analysis, that is, areas with a reading leftward asymmetry during reading that was significantly predicted by the lateralization index of the precuneus during calculation. Secondary peaks are reported in italic.

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