Rosa

On Wednesday, December 18, 2013, Douglas N Greve wrote:

Hi Rosa, let me see if I have this straight. For a single subject (in a
single session?) you have multiple runs. Each run only covers a part of
the brain (do the different runs overlap?). In the end, you want to have
a full brain analysis by combining the different parts. Is that right?

doug

On 12/18/2013 03:57 PM, Rosa Lafer-Sousa wrote:
> freesurfers,
>
> we've acquired fMRI data from [slightly different] slice
> prescriptions, all partial brain slices. we want to analyze this data
> all together, but we also want to have the best registration possible
> [i.e., use bbregister]. what's the best way to do this? here are the
> ideas we have:
>
> 1. analyze these data on the individual subject's surface with
> selxavg3-sess. the one problem is that we don't see how to pass the
> registration file for each run. [there are different registrations
> for distortion-corrected or not]
>
> 2. run glms for each run independently and then combine the subject's
> data together with a FFX analysis. what's the easiest way to run a
> FFX analysis with fsfast?
>
> 3. upsample these functional data to the subject's anatomy [either
> volume or surface] and then run the analysis there. however, this will
> take a good chunk of memory and compute time.
>
> what's the best thing to do here?
>
> thanks in advance,
> rosa
>
>
> --
>
>
> 210-325-3185
> rlaferso@wellesley.edu <mailto:rlaferso@wellesley.edu>
>
>
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--
Douglas N. Greve, Ph.D.
MGH-NMR Center
greve@nmr.mgh.harvard.edu
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