Table 2.
Significant clusters for non-dynapenic > dynapenic during the dual-task for the whole brain analysis and small volume correction in ROI-analysis
| Whole brain | ROI-analysis | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| AAL location | Side | MNI coordinates | t-value | MNI coordinates | t-value | Mixed ANOVA | |||||
| x | y | z | x | y | z | Interaction group x condition with Greenhous-Geisser correction | |||||
| MfG | R | 28 | 6 | 48 | 5.4 | ||||||
| PcG | L | – 52 | 0 | 44 | 5.4 | – 52 | 0 | 42 | 5.4 | F(3,174) = 3.78* | Partial ɳ2 = .03 |
| L | – 44 | 4 | 24 | 4.9 | – 42 | 2 | 26 | 4.8 | F(3,174) = 5.62** | Partial ɳ2 = .06 | |
| SMA | R | 10 | 0 | 76 | 5.0 | 10 | 0 | 76 | 5.4 | F(3,174) = 5.62** | Partial ɳ2 = .05 |
| L | – 4 | 4 | 52 | 5.0 | – 4 | 4 | 52 | 5.0 | F(3,174) = 3.72* | Partial ɳ2 = .03 | |
t-values and activation peaks showing significantly (p < .05, FWE correction for multiple comparisons) higher activation for non-dynapenic participants as opposed to dynapenic participants during the performance of the dual task. Abbreviations: Middle frontal gyrus (MfG), Precentral gyrus (PcG), supplementary motor area (SMA). Mixed ANOVA results on the extracted betas in the ROI-analyses during the dual-task condition with the within-factor ‘condition’ (baseline, motor, arithmetic, dual) and the between-factor ‘group’. ** p < .005. * p < .05 with Greenhouse–Geisser correction