[Freesurfer] average of surfaces

External Email - Use Caution Dear Freesurfer experts, I have multiple PET volumetric images in MNI standard space. I can average (or get the Tmean) of these images using fslmerge then fslmaths. I would like to do something similar on surfaces images. I registered the images from

Re: [Freesurfer] Surface based paired t test

External Email - Use Caution Hi Dr Greve, I tried to follow this web page https://surfer.nmr.mgh.harvard.edu/fswiki/PairedAnalysis This tutorial seems to be for cortical thickness data. After sampling each individual's surface onto the average surface, how can I modify this comma

[Freesurfer] FSGD File

External Email - Use CautionHi everyone,   thank you very much for answering! Originally I created the FSGD File with excel, saved it as a tab delimited text file and used the tr-command afterwards (tr ’\r’ ’\n’ < FSGD_2.fsgd.txt > FSGD_2.fsgd).  After having read your message

[Freesurfer] Freesurfer tutorial datasets v5.1/5.3

External Email - Use Caution Hello FreeSurfer Experts, I'm following the longitudinal FreeSurfer tutorial using v5.1 to become acquainted with stream prior to analyzing our own data. I was able to follow the QDEC tutorial using this version on the Buckner data, however, I kept

[Freesurfer] Overall maxima is high and still no significant cluster

External Email - Use Caution Hi FS experts, I am estimating the group-behavioral thickness interaction using contrast 2 FSGD file: https://surfer.nmr.mgh.harvard.edu/fswiki/Fsgdf2G2V at CFT < 0.01 and CWT < 0.05 at FWHM of 12 mm. I do not find any significant clusters and my outp

[Freesurfer] [PETSurfer] MGX and RBV Correction

External Email - Use Caution Dear Freesurfer's experts, I tried to use PETSurfer to correct partial volume effect on my FDG PET images, testing both Muller-Gartner and RBV corrections. I ran the commands specified in PETSurfer website and used the two following commands for both MG

[Freesurfer] Volume, area and thickness external analysis

External Email - Use Caution Hi FreeSurfer devs, Is there any difference bet I ran the recon-all several participants (using the command recon-all -subjid -all) and I want to out an external analysis using the volume, area and thickness measures of the Destrieux and Desikan-Killi

Re: [Freesurfer] Volume, area and thickness external analysis

Hi Miguel no, -qcache shouldn't change anything. It just runs some additional steps to map various measures to the fsaverage space (and smooth them at preset levels) cheers Bruce On Thu, 29 Nov 2018, Miguel Ángel Rivas Fernández wrote: External Email - Use Caution Hi Free