|
Unilateral group [N = 15]
|
Observation
|
Motor imagery
|
Observation & motor imagery
|
Imitation
|
|---|
|
left hemisphere (contralateral) (μmol/l ± SD)
|
|
Mean Δ[O2Hb]
|
0.0692 ± 0.4510
|
0.0868 ± 0.5201
|
0.0446 ± 0.5741
|
0.1715 ± 0.4567
|
|
Mean Δ[HHb]
|
-0.0052 ± 0.1247
|
0.0356 ± 0.2043
|
-0.0089 ± 0.2391
|
0.0212 ± 0.1685
|
|
T-test, CI 95%
| | | | |
|
[O2Hb] p = value
|
p = 0.154
|
p = 0.049*
|
p = 0.333
|
p < 0.001*
|
|
[HHb] p-value
|
p = 0.161
|
p = 0.061
|
p = 0.760
|
p = 0.323
|
|
ANOVA, post-hoc-tests, Bonferroni 0.05
|
[HHb] p-value
|
[O2Hb] p = value
| |
| |
O - MI
|
p = 0.387
|
p = 1.000
| |
| |
O - O&MI
|
p = 1.000
|
p = 1.000
| |
| |
O - IM
|
p = 1.000
|
p = 0.509
| |
| |
MI - O&MI
|
p = 0.265
|
p = 1.000
| |
| |
MI - IM
|
p = 1.000
|
p = 0.934
| |
| |
O&MI - IM
|
p = 1.000
|
p = 0.194
| |
- (Top) Mean signal amplitudes (μmol/l ± SD) of channels with significant concentration changes. Separate calculations for increases in [O2Hb], decreases in [HHb] in response to the four conditions for each group. Numbers were rounded to four decimal places. (Middle) Intra-condition statistical significance of the mean changes between [O2Hb]rest and [O2Hb]stim and [HHb]rest and [HHb]stim using the paired t-test; confidence interval (CI) = 95%. (Bottom) Inter-condition statistical significance of mean changes of Δ[O2Hb] and Δ[HHb] between the four conditions using ANOVA. Shown are post-hoc tests (with Bonferroni correction); significant values (p ≤ 0.05) are highlighted by * (observation = O, motor imagery = MI, observation & motor imagery = O & MI, imitation = IM)
