Fig. 4.

Neuronal and vascular contributions to spatially similar network components. Using dual-regression, the component time-series for the three network pairs (Default Mode Network, Task Positive Network, Visual Network) were obtained in the original 30 datasets. The normalized R² values (percentage of explained variance) were calculated for each stimulus. For each functional brain network pair, one was found to be significantly more associated with the appropriate neuronal stimulus and the other significantly more associated with the vascular CO₂ stimulus (∗p ​< ​0.05, paired t-tests, corrected for multiple comparisons).