I want to make an Alff/fAlff analysis using the last version of DPARSFA with images previously pre-processed (realigned, coregistered, normalized and smoothed), but not using this software. Moreover, I want to covariate the analysis with some physiologic data, like cardiac and respiratory signals. In DPARSFA seems to be the chance of introducing the nuisance covariates before, but also after, making the Alff/fAlff analysis. The introducing these nuisance covariates before or after Alff/fAlff box is going to modify the Alff/fAlff output images??
On the ther hand, I don't have very clear if the filter option is going to affect these nuisance covariates.