Dear Doug,

I'm very thankful for your helpful comments! I will check the feat2surf script and apply it to map FSL-data in individual and common space (preconditions: existing FEATdir with non-smoothed EPI's and applied reg-feat2anat). I will make use of the -projfrac 0.5 to sample in the middle of the cortical ribbon (to account for drain vessel effects).

According to the intended distance measures, relative measures between peak voxels are also fine. So, maybe mris_pmake is still a good option...

Greets, Chris

Christopher Milde, M.Sc. Biol. Institute for Cognitive and Clinical Neuroscience Central Institute of Mental Health Square J 5 68159 Mannheim, Germany

Phone: +49-621-1703-6313 E-mail: christopher.milde@zi-mannheim.de Homepage: http://www.zi-mannheim.de/ Office: Forschungs- und Verwaltungsgebäude, Room 230

-----Ursprüngliche Nachricht----- Von: freesurfer-bounces@nmr.mgh.harvard.edu [mailto:freesurfer-bounces@nmr.mgh.harvard.edu] Im Auftrag von Douglas N Greve Gesendet: Donnerstag, 20. März 2014 16:26 An: freesurfer@nmr.mgh.harvard.edu Betreff: Re: [Freesurfer] combine FEAT data with inflated ANATOMY to measure distances

1) Use the feat2surf script 2) I have not used mris_pmake myself. I'm guessing it will *work* on the sphere in that it will return a path, but the distances between vertices have no relationship to anatomy. It might fail on a flat map because it is a patch.

doug

On 03/20/2014 10:43 AM, Milde, Christopher wrote:

Dear Surfers,

At moment I'm dealing with a huge dataset, preprocessed (with and without smoothing) and statistically analyzed in FSL FEAT.

I used the reg-feat2anat to project functional EPI on inflated MPRAGE (recon-all).

Because *I'm interested in measuring Euclidian distances between peak voxels*, I want to project *FEAT EPI-data on cortical flat maps (mris_flatten) or spherical surfaces*.

èIs it possible to project FEAT-data on flat_maps?

èDoes mris_pmake* works equally fine on different projections of the EPI to ANATOMY (sphere, flat map) to measure peak/vertex distances?

*https://mail.nmr.mgh.harvard.edu/pipermail//freesurfer/2011-April/017 866.html https://mail.nmr.mgh.harvard.edu/pipermail/freesurfer/2011-April/0178 66.html

I'm a quite Surfer-newby. So sorry for that maybe stupid question.

Thank you in advance,

Christopher

*Christopher Milde, M.Sc. Biol.*

Institute for Cognitive and Clinical Neuroscience

Central Institute of Mental Health Square J 5

68159 Mannheim, Germany

Phone: +49-621-1703-6313

E-mail: christopher.milde@zi-mannheim.de

Homepage: http://www.zi-mannheim.de/ http://www.zi-mannheim.de/

Office: Forschungs- und Verwaltungsgebäude, Room 230

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