and one point of clarification: i only care about beta weights for each condition of interest, so i don't care that -taskreg would only run an F-test for significance maps and wouldn't give me t maps for each regressor of interest.
thanks again, alex On Sun, Sep 14, 2014 at 1:55 PM, Alex Kell <alexk...@mit.edu> wrote: > hi freesurfers, > > i would like to use an empirically derived HRF with mkanalysis-sess. i > have derived the HRF i want [via an FIR model], but it's not obvious how i > can use my custom HRF with mkanalysis-sess. > > one option, it seems, is to feed in my own regressors with the -taskreg > flag and then not supply the model with any other regressors of interest. > i'd just convolve stick regressors that have the appropriate timing with > my own HRF. but this would only work if selxavg3-sess does NOT convolve > task regressors with the HRF. > > so two questions: > > 1. is the -taskreg flag the best way to do this? is there another, better > way? > > 2. does selxavg3-sess convolve task regressors with the HRF? > > > thanks, > alex > >
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