[Freesurfer] functional connectivity maps (correlation and z maps)

2015-03-25 Thread Barbour, Tracy,M.D.
Hello, I am doing a functional connectivity analysis. I want to make individual pearson correlation maps for each subject (correlation between the seed region and all other voxels in the brain) and then convert them to a map of z-scores using a Fisher's z transformation. I want to then get an

Re: [Freesurfer] hello freesurfer developers!

2015-03-25 Thread Z K
Hello Areum, I believe you simply got unlucky and downloaded an unstable version of freeview. The library issue you encountered has since been fixed. Please redownload the updated version of freeview and attempt again. We can look into the libjpeg and libtiff issue after you install the new

Re: [Freesurfer] mri_watershed Error: indices out of bounds

2015-03-25 Thread Edgar Busovaca
Hello Bruce, I took a look at the file with freeview and I can't identify anything peculiar about the data. The file is named Indices_oob.nii and has been uploaded to /transfer/incoming on the FTP file exchange server. Thank you for your swift reply and in advance for your time. Best regards,

Re: [Freesurfer] T1 image signal intensity issue

2015-03-25 Thread Bruce Fischl
Hi Abisan hmmm, can you tell why it is bright back there? Make sure it isn't nose wrapping into the back of the head. Otherwise I would try some control points cheers Bruce On Wed, 25 Mar 2015, Abisan - wrote: Hi FreeSurfer experts, I have used recon-all -all on many T1w images and it has

Re: [Freesurfer] functional connectivity maps (correlation and z maps)

2015-03-25 Thread Douglas N Greve
cd glmdir/contrast (could be sig.nii or sig.nii.gz) matlab sig = MRIread('sig.mgh'); p = (10.^-abs(sig.vol))/2; z = sig; z.vol = sign(sig.vol).*fast_p2z(p); MRIwrite(z,'z.mgh') On 03/25/2015 10:26 AM, Barbour, Tracy,M.D. wrote: Hello, I am doing a functional connectivity analysis. I