Hi AFNI Experts,
I recently ran a gPPI analysis. I am now wanting to extract the betas (or z-scores) into a text file, so that I can correlate the gPPI index at a target region with offline self-reported measures of anxiety. I believe that 3dttest++ does something similar if I use a covariate file with the anxiety measures.
But I want to instead extract the values into a text file and create scatter plots of this relationship...Since the interaction term for the gPPI isn't created at the individual subject-level, would I need to use 3dcalc to create a difference score between my two conditions (e.g., [Seed X condition A] - [Seed X condition B])? Then I could extract this value into a text editor for creating plots and offline correlations?
Thanks,
Danny
