Table 2.
The association of brain volumes with fine motor skills.
| n = 1,126 | Clinical score | Length of drawing (cm) | Movement time (s) | Speed variability (cm/s) | Deviation from template (cm2) | Number of crossings template |
|---|---|---|---|---|---|---|
| Cerebral gray mattera | −0.06 (−0.10; −0.02) | −0.09 (−0.20; 0.02) | 0.05 (−0.07; 0.16) | −0.13 (−0.24; −0.01) | −0.20 (−0.31; −0.09) | −0.12 (−0.24; −0.01) |
| Cerebral white mattera | −0.03 (−0.07; 0.01) | 0.05 (−0.06; 0.15) | 0.13 (0.02; 0.23) | −0.15 (−0.26; −0.05) | −0.14 (−0.25; −0.04) | 0.02 (−0.08; 0.13) |
| Cerebellar gray matterb | −0.01 (−0.04; 0.02) | 0.02 (−0.04; 0.10) | −0.01 (−0.09; 0.07) | 0.00 (−0.08; 0.08) | 0.03 (−0.05; 0.11) | 0.00 (−0.08; 0.08) |
| Cerebellar white matterb | −0.01 (−0.04; 0.01) | 0.03 (−0.04; 0.10) | 0.04 (−0.04; 0.11) | −0.02 (−0.09; 0.05) | 0.01 (−0.06; 0.08) | 0.06 (−0.02; 0.13) |
| White matter lesions | 0.04 (0.02; 0.07) | 0.04 (−0.02; 0.10) | 0.00 (−0.07; 0.07) | 0.04 (−0.03; 0.10) | 0.06 (−0.01; 0.13) | 0.01 (−0.05; 0.07) |
Values represent standardized differences in spiral-drawing characteristics per SD increase in brain volume (95% confidence interval). Adjusted for age, sex, education, and intracranial volume.
aAdditionally adjusted for cerebellar volume.
bAdditionally adjusted for cerebral volume.
Values in bold indicate significance at level p < 0.05.