Table 4.
Between-Session Comparison of fMRI Variables in the 8 Healthy Controls During Sequential Finger Tapping
| Dominant (R) Hand |
Non-dominant (L) Hand |
|||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| S1 |
S2 |
ISV |
S1 |
S2 |
ISV |
|||||||
| fMRI Variables | Contra M1 | Ipsi CB | Contra M1 | Ipsi CB | Contra M1 | Ipsi CB | Contra M1 | Ipsi CB | Contra M1 | Ipsi CB | Contra M1 | Ipsi CB |
| VC | 543 (110) |
903 (221) |
548 (88) |
845 (102) |
0.24 (0.09) |
0.30 (0.11) |
536 (65) |
869 (213) |
539 (119) |
1336 (420) |
0.26 (0.09) |
0.29 (0.06) |
| %SC | 1.00 (0.11) |
0.75 (0.05) |
0.95 (0.08) |
0.71 (0.05) |
0.06 (0.01) |
0.07 (0.03) |
1.64 (0.08) |
1.25 (0.09) |
1.46 (0.14) |
1.27 (0.14) |
0.10 (0.02) |
0.07 (0.01) |
| GC x | −37 (1) |
−36 (1) |
0.02 (0.01) |
38 (1) |
38 (1) |
0.03 (0.01) |
||||||
| y | −20 (1) |
NA | −20 (1) |
NA | 0.04 (0.01) |
NA | −17 (2) |
NA | −18 (1) |
NA | 0.07 (0.04) |
NA |
| Z | 57 (1) |
59 (1) |
0.03 (0.01) |
56 (2) |
56 (1) |
0.03 (0.01) |
||||||
| LI_MI | 0.86 (0.06) |
0.90 (0.04) |
0.07 (0.03) |
0.73 (0.08) |
0.57 (0.13) |
0.24 (0.09) |
||||||
| Ra_ipsiCB | 0.88 (0.06) |
0.89 (0.03) |
0.09 (0.03) |
0.63 (0.07) |
0.70 (0.06) |
0.10 (0.03) |
||||||
VC: voxel counts; % SC: percentage signal change; LI_M1: laterality index of M1 from VC; Ra_ipsiCB: ratio of ipsilateral cerebellar activation from VC; Ra_ipsiCB = ipsilateral / (ipsilateral + contralateral); M1: primary motor cortex; CB: cerebellum; S1: session 1; S2: session 2; GC: geometric center of peri-lesional M1 activation; ISV: inter-session variation; ISV was the absolute difference in fMRI variables between the two sessions divided by their summation. NA: not available. Numbers are mean and se (in parenthesis)