Table 3.
Brain Volume Measures of Subjects
|
|
Group 1 (Basal ganglia) n = 16a
|
Group 2 (Controls) n = 13b
|
Analysis
|
Sig.
|
||
|---|---|---|---|---|---|---|
| M
|
SE
|
M
|
SE
|
t-Test/ANCOVA
|
P
|
|
| Total brain volume (mL) | 1253 | 33 | 1128 | 45 | t[27] = 2.31 | 0.029 |
| Cerebellar volume (mL)c | 117.4 | 1.8 | 122.4 | 2.1 | F[1;26] = 3.09 | 0.091 |
| Pre-SMA, leftc | 10.5 | 0.4 | 11.7 | 0.5 | F[1;26] = 3.13 | 0.089 |
| Pre-SMA, rightc | 11.3 | 0.6 | 11.4 | 0.7 | F[1;26] = 0.02 | 0.895 |
| SMA-proper, leftc | 10.4 | 0.7 | 10.6 | 0.8 | F[1;26] = 0.05 | 0.834 |
| SMA-proper, rightc | 10.4 | 0.7 | 12.1 | 0.8 | F[1;26] = 2.63 | 0.117 |
(M) Mean, (SE) standard error of mean, (SMA) supplementary motor area, (ANCOVA) analysis of covariance with total brain volume as a covariate.
a
Brain volume measures were only available for 16 subjects of the basal ganglia group. Five of the seven subjects with additional lacunar lesions in frontal motor areas (including supplementary motor area) (cf. Fig. 2A, Materials and Methods, Lesion Analysis and Lesion Groups) are included in this group.
b
Brain volume measures were only available for 13 subjects of the control group.
c
Mean values adjusted for total brain volume.