Suppose that we have an experiment with three stimulus conditions and also a "resting" cross-fixation condition. After the fact, we decide that we are not interested in the "resting" cross-fixation baseline condition but instead want to use one of our stimulus conditions as the baseline, comparing the remaining two stimulus conditions. What approaches could one take in using 3dDeconvolve to acheive that goal? Would it be reasonable to use a censor file to get rid of all of the cross fixation baseline TRs and code only the two stimulus functions as .1D files, thus leaving the 3rd condition as the baseline? I should note that the three conditions have roughly the same number of presentations each, so the "new" baseline would have about half as many presentations as the total of the remaining stimulus functions.
Thanks,
- Jay
