Dear afni experts,
I am running for the first time a task based fMRI analysis with afni. It is a very fast event related design (short events and short inter trial intervals).
I was visiting the afni bootcamp a few weeks ago and I was recommended to run my analysis with TENT function (TENT for the regressors I care about and GAM for the regressors I don t care about, as I had some collinearity issues when using only TENT), but also try GAM for all regressors and compare the two analysis.
My question is now, what should I focus on when comparing the results from different basis functions?
Would I only look at which basis function gives me a higher beta and t-stats for the regressor I am interested in? But this might also differ for the region I am looking at.
Should I instead compare the full model F statistics?
What is recommended for this case?
Thank you very much in advance
Carolin
