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. Author manuscript; available in PMC: 2016 May 1.
Published in final edited form as: Neuroimage. 2015 Feb 17;111:123–135. doi: 10.1016/j.neuroimage.2015.02.021

Table 5.

Correlation between tract-averaged diffusion parameters and their genetic contribution estimates

FA vs a2FA
AD vs a2AD
RD vs a2RD
r p r P r P
Corpus callosum
 rostrum, orbitofrontal 0.68 <.001 −0.51 <.001 −0.58 <.001
 genu, prefrontal 0.53 <.001 −0.42 <.001 0.05 .63
 body, premotor 0.71 <.001 −0.28 .01 0.42 <.001
 body, motor 0.30 .01 −0.09 .43 0.35 <.005
 body, parietal 0.74 <.001 0.22 .01 0.65 <.001
 splenium, occipital 0.78 <.001 0.03 .72 −0.05 .56
 tapetum, temporal 0.43 <.001 0.73 <.001 0.51 <.001
Cortico-thalamic tract
 prefrontal, left 0.59 <.001 0.73 <.001 0.71 <.001
 prefrontal, right 0.33 <.005 0.82 <.001 0.75 <.001
 premotor, left 0.41 <.001 0.44 <.001 0.53 <.001
 premotor, right −0.03 .82 0.37 <.005 0.70 <.001
 motor, left 0.01 .91 0.43 <.001 0.66 <.001
 motor, right 0.30 .01 0.35 <.005 0.61 <.001
 parietal, left −0.25 .04 0.60 <.001 0.71 <.001
 parietal, right −0.03 .81 0.43 <.001 0.86 <.001
Corticofugal tract
 prefrontal, left 0.07 .46 0.66 <.001 0.68 <.001
 prefrontal, right 0.01 .93 0.69 <.001 0.72 <.001
 premotor, left 0.03 .77 0.58 <.001 0.65 <.001
 premotor, right −0.05 .60 0.52 <.001 0.73 <.001
 motor, left −0.13 .15 0.20 .03 0.55 <.001
 motor, right −0.35 <.001 0.14 .14 0.72 <.001
 parietal, left 0.09 .31 0.38 <.001 0.79 <.001
 parietal, right −0.33 <.001 0.38 <.001 0.89 <.001
Medial lemniscal
 left 0.69 <.001 0.51 <.005 0.63 <.001
 right 0.64 <.001 0.31 .05 0.44 <.005
Cingulum
 cingulate gyrus, left 0.54 <.001 0.06 .61 0.01 .97
 cingulate gyrus, right 0.12 .29 −0.43 <.001 0.31 .01
 hippocampal, left 0.66 <.001 0.02 .81 0.75 <.001
 hippocampal, right 0.24 .02 −0.16 .10 0.27 .01
Fornix
 left 0.38 <.001 0.80 <.001 0.72 <.001
 right 0.41 <.001 0.59 <.001 −0.17 .04
Arcuate fasciculus
 fronto-parietal, left 0.64 <.001 0.24 .05 −0.03 .82
 fronto-parietal, right 0.36 <.005 0.22 .09 −0.07 .59
 fronto-temporal, left 0.56 <.001 0.15 .10 −0.70 .46
 fronto-temporal, right 0.47 <.001 −0.58 <.001 −0.13 .19
 temporo-parietal, left 0.17 .15 −0.08 .46 −0.24 .03
 temporo-parietal, right −0.14 .23 −0.10 .40 0.29 .01
Uncinate fasciculus
 left 0.45 <.001 0.78 <.001 0.76 <.001
 right 0.35 <.005 0.55 <.001 0.34 <.005
Sup. longitudinal fasciculus
 left 0.44 <.001 0.16 .17 −0.05 .68
 right 0.28 .02 0.22 .07 0.11 .36
Inf. longitudinal fasciculus
 left 0.54 <.001 −0.30 <.005 −0.69 <.001
 right 0.66 <.001 0.16 .12 −0.18 .07
Inf. fronto-occipital fasciculus
 left 0.60 <.001 0.21 .01 0.30 <.001
 right 0.32 <.001 0.34 <.001 0.31 <.001
Optic tract
 left −0.29 .01 0.05 .70 0.43 <.001
 right 0.13 .31 0.24 .06 0.57 <.001