Hi AFNIers,

This is what I want to do: I have run 3dDeconvolve on an event related paradigm and I want to view the fit of the model to the event-related data.

Now, I know that the AFNI viewer has the capability to show the fit over the entire time series - i.e. by loading the raw data as the underlay - and loading the output of -fitt. But what I want to do is to view the averaged, event-related data and it's corresponding fit. For example, every time a negative stimulus is presented I want to be able to view the averaged, raw BOLD response (baseline corrected or not) to that stimulus along with the corresponding fit/error (also averaged for that condition, of course). As far as I can tell, Gang's page on viewing model fit only looks at the entire session - not event related.

What would be super is if I could also dynamically click around the brain to look at the averaged BOLD response/fit/error across separate regions. It would also be nice to alter the length of the window (number of TRs) about which I am viewing the averaged time-series.

I know VoxBo has had a very nice capacity to do this.

Does AFNI do this natively? If not, has anyone written code to do this? One option, of course, would be to parse the output of fitts and errts based upon the timing of the paradigm, but I would have to do some interpolation because the timing was in seconds, while TR = 2.0sec.

I haven't seen this discussed in the threads, so if it has been discussed earlier I'd be happy to take that suggestion

Thanks.

-aaron