If this is just a subject-level analysis, it does not make sense to consider gender and age in the time series regression model because both are FIXED for each each subject. Only at the population level would it become reasonable to incorporate the two variables. And 3dDeconvolve/3dREMLfit, not 3dttest++, would be the appropriate program in your case.
Gang
Edited 1 time(s). Last edit at 03/27/2020 06:28PM by Gang.