Re: [Freesurfer] FSL-FS results integration

Estephan Moana wrote:

Hello Freesurfer people,

I am following the FSL-Fressurfer tutorial from the June course to look at my data on both applications. I successfully was able to register my FEAT output (non-smoothed) to the FS anatomical. My questions are for the following steps:

1. Is there a difference between resampling individual run COPE's to a common surface instead of resampling subject-level GFEAT COPE's (in native space)? If they are equivalent the second option seems to be less cumbersome when typing the mris_preproc command - is this a correct conclusion?

It is about the same, and yes the mris_preproc command is much simpler.

1. When I display individual functional runs or GFEAT results over the subject's surface, I am basically looking at FEAT/GFEAT results, correct? So when I run a surface_based group analysis using mri_glmfit how similar/different are these results from those of a group-level FEAT analysis, assuming that I used a simple one-sample group mean and fixed-effects for both analyzes?

For as single subject or across subjects? For a single subject, they will be similar. For a group subject, you'll be using surface-based registration instead of volume based, so hopefully you'll get more power (ie, smaller but more intense clusters).

doug

Thank you.

Estephan

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