Re: [Freesurfer] Extract smoothed cortical thickness whole-brain vertex-wise

2017-07-10 Thread Bruce Fischl
glad it worked out Bruce On Mon, 10 Jul 2017, Nicolette Schwarz wrote: Thanks so much, that works! I did try that but didn't realize that I need to specify both $SUBJECTS_DIR/sub/surf/lh.thickness.fwhm10.fsaverage.mgh as well as $SUBJECTS_DIR/fsaverage/surf/lh.sphere.reg explicitely (wanted to p

Re: [Freesurfer] Simple math with freesurfer surfaces

2017-07-10 Thread Bruce Fischl
do you actually mean the average of the (xyz) surface locations or do you mean the average/difference of scalar fields over the surface? On Mon, 10 Jul 2017, Van Der Deijl, Rosanne wrote: > Dear Freesurfer team, > > Is it possible to add/subtract/compute the average of freesurfer surface > .mgh

[Freesurfer] Simple math with freesurfer surfaces

2017-07-10 Thread Van Der Deijl, Rosanne
Dear Freesurfer team, Is it possible to add/subtract/compute the average of freesurfer surface .mgh files? And how would I do this? Thank you in advance. Kind regards, Rose ___ Freesurfer mailing list Freesurfer@nmr.mgh.harvard.edu https://mail.nmr.m

[Freesurfer] questions mri_glmfit-sim

2017-07-10 Thread Van Der Deijl, Rosanne
Dear Freesurfer team, I have two more questions about mri_glmfit-sim. 1. In the summary file I get a list of all the inputs/outputs, but I don't understand what all of them mean. Could you explain the ones I highlighted in bold? 2. Is it possible to a priori set the area threshold, so that I o

Re: [Freesurfer] Extract smoothed cortical thickness whole-brain vertex-wise

2017-07-10 Thread Nicolette Schwarz
Thanks so much, that works! I did try that but didn't realize that I need to specify both $SUBJECTS_DIR/sub/surf/lh.thickness.fwhm10.fsaverage.mgh as well as $SUBJECTS_DIR/fsaverage/surf/lh.sphere.reg explicitely (wanted to print from sub/surf and so thought that I'd only need to specify the other

[Freesurfer] error with mri_glmfit --frame-mask

2017-07-10 Thread Sadie Marvel
?Hi list, I am trying to run mri_glmfit on a group of subjects using the --frame-mask flag because I want the design to be changed based on which subjects have a value at a single voxel. This is because I have one subject in my group whose signal was cut off through parts of their occipital an

Re: [Freesurfer] Extract smoothed cortical thickness whole-brain vertex-wise

2017-07-10 Thread Bruce Fischl
it's because you are still loading the individual subject sphere.reg. Try using $SUBJECTS_DIR/fsaverage/surf/lh.sphere.reg as the surface instead of lh.sphere.reg cheers Bruce On Mon, 10 Jul 2017, Nicolette Schwarz wrote: Hi Bruce, Thank you for your answer! I have tried: but get th

Re: [Freesurfer] Fwd: surface inaccuracies around the optic chiasm

2017-07-10 Thread Bruce Fischl
1. Yes, I believe that is true. 2. Why would you lose earlier corrections? In general we keep all edits cheers Bruce On Mon, 10 Jul 2017, Gabor Perlaki wrote: > Somehow, my last email didn't appear on the Freesurfer forum. I'm resending > it without the attachments. > > Dear Bruce, > > I'm n

Re: [Freesurfer] help with code interpretation

2017-07-10 Thread Leanne Hunt
Thanks! On Mon, 10 Jul 2017 at 15:08, Bruce Fischl wrote: > Gyrus and Sulcus I imagine, but I'll cc Christophe so he can chime in > > > On Mon, 10 Jul 2017, Leanne Hunt wrote: > > > Hi, > > I am currently using free surfer to analyse my brain imaging and i was > > wondering if you could tell me

Re: [Freesurfer] Extract smoothed cortical thickness whole-brain vertex-wise

2017-07-10 Thread Nicolette Schwarz
Hi Bruce, Thank you for your answer! I have tried: mris_convert -c lh.thickness.fwhm10.fsaverage.mgh lh.sphere.reg test.asc but get this: ERROR: number of vertices in lh.thickness.fwhm10.fsaverage.mgh does not match surface (163842,141823) Why might that be? Thank you in advance! Nic On Satu

[Freesurfer] smoothing data

2017-07-10 Thread Tamara Tavares
Hi All, I was hoping someone can help me with two naive questions I have: I have read on the Freesufer wiki that you should smooth surface data before analyzing. Should I smooth the data only after I have ran recon-all and have made edits? Also, should volumetric data be smoothed or is this limit

[Freesurfer] Fwd: surface inaccuracies around the optic chiasm

2017-07-10 Thread Gabor Perlaki
Somehow, my last email didn't appear on the Freesurfer forum. I'm resending it without the attachments. Dear Bruce, I'm not interested in the chiasm, but the medialorbitofrontal cortex would be interesting. In most of the subjects pial and white surfaces intrude into the area around the optic chi

Re: [Freesurfer] help with code interpretation

2017-07-10 Thread Bruce Fischl
Gyrus and Sulcus I imagine, but I'll cc Christophe so he can chime in On Mon, 10 Jul 2017, Leanne Hunt wrote: Hi, I am currently using free surfer to analyse my brain imaging and i was wondering if you could tell me what G_S stands for in the rh.aparc.a2009s.stats and lh.aparc.a2009s.stats fol

Re: [Freesurfer] help with code interpretation

2017-07-10 Thread Leanne Hunt
Hi, I am currently using free surfer to analyse my brain imaging and i was wondering if you could tell me what G_S stands for in the rh.aparc.a2009s.stats and lh.aparc.a2009s.stats folders? for example: G_and_S_frontomargin Many thanks Leanne ___ Frees