Table 1.
Univariate ACE model for cortical mean diffusivity.
| Standardized variance
components |
||||||||
|---|---|---|---|---|---|---|---|---|
| Region of Interest | rMZ | rDZ | a2 | 95% CI | c2 | 95% CI | e2 | 95% CI |
| Global Mean | 0.70 | 0.30 | 0.65 | (0.19; 0.75) | 0.00 | (0.00; 0.42) | 0.35 | (0.25; 0.47) |
| Frontal lobe | ||||||||
| Superior frontal gyrus | 0.67 | 0.36 | 0.28 | (0.00; 0.70) | 0.33 | (0.00; 0.65) | 0.39 | (0.29; 0.52) |
| Rostral middle frontal gyrus |
0.68 | 0.23 | 0.65 | (0.25; 0.74) | 0.00 | (0.00; 0.36) | 0.35 | (0.26; 0.48) |
| Caudal middle frontal gyrus |
0.67 | 0.32 | 0.62 | (0.14; 0.75) | 0.04 | (0.00; 0.47) | 0.35 | (0.25; 0.48) |
| Lateral orbitofrontal cortex | 0.63 | 0.18 | 0.61 | (0.28; 0.72) | 0.00 | (0.00; 0.27) | 0.39 | (0.28; 0.54) |
| Medial orbitofrontal cortex | 0.49 | 0.19 | 0.48 | (0.00; 0.61) | 0.00 | (0.00; 0.42) | 0.52 | (0.39; 0.70) |
| Pars opercularis | 0.72 | 0.22 | 0.66 | (0.28; 0.75) | 0.00 | (0.00; 0.35) | 0.34 | (0.25; 0.46) |
| Pars orbitalis | 0.57 | 0.10 | 0.57 | (0.25; 0.69) | 0.00 | (0.00; 0.26) | 0.43 | (0.31; 0.60) |
| Pars triangularis | 0.68 | 0.13 | 0.63 | (0.33; 0.73) | 0.00 | (0.00; 0.26) | 0.37 | (0.27; 0.51) |
| Frontal pole | 0.51 | 0.38 | 0.48 | (0.00; 0.69) | 0.09 | (0.00; 0.47) | 0.43 | (0.31; 0.61) |
| Precentral gyrus | 0.59 | 0.27 | 0.55 | (0.03; 0.68) | 0.02 | (0.00; 0.46) | 0.44 | (0.32; 0.59) |
| Paracentral lobule | 0.72 | 0.48 | 0.34 | (0.00; 0.75) | 0.35 | (0.00; 0.67) | 0.31 | (0.23; 0.43) |
| Cingulate cortex | ||||||||
| Rostral anterior
cingulate cortex |
0.53 | 0.17 | 0.47 | (0.00; 0.59) | 0.00 | (0.00; 0.42) | 0.53 | (0.41; 0.69) |
| Caudal anterior
cingulate cortex |
0.51 | 0.46 | 0.16 | (0.00; 0.61) | 0.34 | (0.00; 0.58) | 0.49 | (0.36; 0.66) |
| Posterior cingulate cortex | 0.59 | 0.35 | 0.42 | (0.00; 0.66) | 0.12 | (0.00; 0.53) | 0.45 | (0.34; 0.61) |
| Isthmus cingulate cortex | 0.51 | 0.13 | 0.47 | (0.08; 0.61) | 0.00 | (0.00; 0.32) | 0.53 | (0.39; 0.70) |
| Parietal lobe | ||||||||
| Superior parietal cortex | 0.71 | 0.44 | 0.41 | (0.01; 0.75) | 0.27 | (0.00; 0.61) | 0.33 | (0.24; 0.45) |
| Inferior parietal cortex | 0.65 | 0.29 | 0.59 | (0.09; 0.71) | 0.02 | (0.00; 0.46) | 0.39 | (0.29; 0.54) |
| Supramarginal gyrus | 0.69 | 0.15 | 0.63 | (0.33; 0.73) | 0.00 | (0.00; 0.27) | 0.37 | (0.27; 0.50) |
| Precuneus | 0.72 | 0.35 | 0.65 | (0.21; 0.77) | 0.04 | (0.00; 0.44) | 0.31 | (0.23; 0.43) |
| Postcentral gyrus | 0.61 | 0.50 | 0.22 | (0.00; 0.68) | 0.38 | (0.00; 0.65) | 0.40 | (0.29; 0.54) |
| Occipital lobe | ||||||||
| Lingual gyrus | 0.68 | 0.23 | 0.63 | (0.26; 0.73) | 0.00 | (0.00; 0.32) | 0.37 | (0.27; 0.51) |
| Pericalcarine cortex | 0.67 | 0.34 | 0.63 | (0.18; 0.74) | 0.01 | (0.00; 0.41) | 0.36 | (0.26; 0.49) |
| Cuneus | 0.71 | 0.29 | 0.69 | (0.33; 0.77) | 0.00 | (0.00; 0.32) | 0.31 | (0.23; 0.44) |
| Lateral occipital cortex | 0.72 | 0.21 | 0.69 | (0.40; 0.78) | 0.00 | (0.00; 0.26) | 0.31 | (0.22; 0.44) |
| Temporal lobe | ||||||||
| Superior temporal gyrus | 0.68 | 0.43 | 0.40 | (0.00; 0.73) | 0.24 | (0.00; 0.60) | 0.36 | (0.26; 0.49) |
| Middle temporal gyrus | 0.65 | 0.27 | 0.62 | (0.22; 0.72) | 0.00 | (0.00; 0.35) | 0.38 | (0.28; 0.52) |
| Inferior temporal gyrus | 0.53 | 0.06 | 0.51 | (0.12; 0.65) | 0.00 | (0.00; 0.32) | 0.49 | (0.35; 0.67) |
| Transverse temporal cortex | 0.71 | 0.11 | 0.66 | (0.43; 0.75) | 0.00 | (0.00; 0.19) | 0.34 | (0.25; 0.47) |
| Banks of the sup.
temporal sulcus |
0.72 | 0.12 | 0.66 | (0.43; 0.76) | 0.00 | (0.00; 0.20) | 0.34 | (0.24; 0.47) |
| Entorhinal cortex | 0.42 | −0.19 | 0.45 | (0.15; 0.64) | 0.00 | (0.00; 0.15) | 0.55 | (0.36; 0.83) |
| Parahippocampal cortex | 0.41 | 0.37 | 0.00 | (0.00; 0.53) | 0.39 | (0.00; 0.53) | 0.60 | (0.45; 0.76) |
| Fusiform gyrus | 0.48 | 0.21 | 0.31 | (0.00; 0.56) | 0.11 | (0.00; 0.49) | 0.58 | (0.44; 0.75) |
| Temporal pole | 0.42 | 0.34 | 0.40 | (0.00; 0.66) | 0.13 | (0.00; 0.51) | 0.48 | (0.34; 0.69) |
rMZ = correlation between monozygotic twins; rDZ = correlation between dizygotic twins; a2 = additive genetic influences; c2 = shared/common environmental influences; e2 = unique environmental influences; 95% CI = corrected 95% confidence intervals.