Article Figures & Data
Figures
- FIG 1.
Comparing left and right FAT parameters in each handedness group. Significant differences (FDR-corrected P < .05), after controlling for age, sex, and ICV, are indicated with asterisks. The error bars represent 95% CIs.
- FIG 2.
Comparing the LI of macrostructural parameters across handedness groups. Significant differences (FDR-corrected P < .05), after controlling for age, sex, and ICV, are indicated with asterisks. The error bars represent 95% CIs.
- FIG 3.
A, The right and left FAT in a sample RH subject (EHI: +100) demonstrating left-side dominance in FAT volume. B, Right and left FAT in a sample LH subject (EHI: −70) demonstrating right-side dominance in FAT volume. L indicates left; R, right.
Tables
Left FAT Right FAT Female, Mean (SD) (n = 404) Male, Mean (SD) (n = 316) P Value Female, Mean (SD) (n = 404) Male, Mean (SD) (n = 316) P Value No. of streamlines 15,891.4 (1959.0) 17,818.0 (2031.5) .003a,b 16,041.1 (1950.3) 17,854.4 (2199.8) .033a Volume (mm3) 15,678.8 (2690.0) 17,808.7 (2934.8) .002b 15,374.0 (2692.0) 17,451.1 (3062.8) .001a,b Length (mm) 74.26 (3.46) 77.40 (3.27) .386 73.55 (3.43) 76.75 (3.00) .073 Diameter (mm) 16.33 (1.33) 17.06 (1.33) .003a,b 16.24 (1.33) 16.94 (1.42) .004a,b FA 0.413 (0.026) 0.413 (0.024) .902 0.402 (0.025) 0.403 (0.023) .287 MD 0.678 (0.033) 0.680 (0.035) .791 0.683 (0.034) 0.682 (0.033) .423 AD 0.995 (0.037) 0.995 (0.037) .697 0.992 (0.037) 0.991 (0.036) .435 RD 0.520 (0.035) 0.522 (0.036) .563 0.527 (0.035) 0.528 (0.034) .474 - Table 2:
Macrostructural and microstructural differences between right- and left-sided FAT
Left FAT, Mean (SD) Right FAT, Mean (SD) P Value No. of streamlines 16,736.9 (2207.8) 16,836.9 (2250.1) .157 Volume (mm3) 16,613.6 (2992.2) 16,285.6 (3039.0) .003a,b Length (mm) 75.64 (3.72) 74.95 (3.62) <.001a,b Diameter (mm) 16.65 (1.37) 16.55 (1.41) .064 FA 0.413 (0.025) 0.403 (0.024) <.001a,b MD 0.679 (0.034) 0.682 (0.033) <.001a,b AD 0.995 (0.037) 0.991 (0.036) <.001a,b RD 0.521 (0.036) 0.528 (0.035) <.001a,b Right-Handedness (n = 612) Left-Handedness (n = 55) Left FAT Mean (SD) Right FAT Mean (SD) P Value Left FAT Mean (SD) Right FAT Mean (SD) P Value No. of streamlines 16,705.3 (2235.0) 16,777.4 (2218.3) .349 16,905.2 (1981.7) 17,279.1 (2363.9) .123 Volume (mm3) 16,614.8 (2928.6) 16,152.7 (3005.7) <.001a,b 16,330.6 (3653.7) 17,200.4 (2957.5) .040a Length (mm) 75.57 (3.72) 74.88 (3.61) <.001a,b 76.36 (3.62) 75.97 (3.40) .293 Diameter (mm) 16.66 (1.34) 16.49 (1.41) .004a,b 16.38 (1.77) 16.87 (1.35) .032a FA 0.413 (0.025) 0.403 (0.024) <.001a,b 0.409 (0.023) 0.399 (0.021) <.001a,b MD 0.679 (0.034) 0.682 (0.033) <.001a,b 0.688 (0.036) 0.693 (0.032) .006a,b AD 0.995 (0.037) 0.991 (0.036) <.001a,b 1.00 (0.041) 1.00 (0.036) .916 RD 0.521 (0.035) 0.528 (0.035) <.001a,b 0.530 (0.036) 0.538 (0.033) <.001a,b LI Right-Handedness (n = 612)a Left-Handedness (n = 55)a P Value No. of streamlines +0.51 (5.78) +1.27 (5.20) .273 Volume (mm3) –1.50 (8.96) +3.19 (10.55) .001b,c Length (mm) –0.46 (1.82) –0.25 (1.79) .414 Diameter (mm) –0.53 (4.40) +1.59 (5.24) <.001b,c FA –1.27 (1.83) –1.21 (1.86) .844 MD +0.24 (0.93) +0.38 (0.95) .231 AD –0.20 (1.01) –0.00 (0.093) .137 RD +0.66 (1.43) +0.74 (1.47) .531
