Re: [Freesurfer] transforming functional volumes to MNI without resampling

2018-05-08 Thread Douglas N. Greve
Those CVS images look about right to me for CVS, so I don't think you've done anything wrong. You could do the reg in two parts: (1) run mni152reg to register the anatomical to the mni152, and (2) run bbregister (6dof) to register the fMRI to the anatomical. Then concatenate them into one regis

Re: [Freesurfer] transforming functional volumes to MNI without resampling

2018-05-08 Thread David Beeler
External Email - Use Caution Alright thanks, mri_coreg looks a little better than bbregister. But similar to bbregister, using 6 dof results in a brain that is a little too small and using 12 dof has both scaling and translation issues. What would be the way to use CVS? I tried

Re: [Freesurfer] transforming functional volumes to MNI without resampling

2018-05-07 Thread Douglas N. Greve
Use mri_coreg instead of bbregister. Make sure to use 12 DOF. You could use CVS as well since that is non-linear On 05/07/2018 04:11 PM, David Beeler wrote: > > > Hi Doug, > Ok so if I am understanding correctly, SPM or FSL will be better at > registering functional data to CVS or MNI space for

Re: [Freesurfer] transforming functional volumes to MNI without resampling

2018-05-07 Thread David Beeler
External Email - Use Caution Hi Doug, Ok so if I am understanding correctly, SPM or FSL will be better at registering functional data to CVS or MNI space for group analyses than freesurfer will be because they have the capability of doing nonlinear registrations. If that's the

Re: [Freesurfer] transforming functional volumes to MNI without resampling

2018-05-07 Thread Douglas N. Greve
If that is really what you want to do, you should use a tool appropriate for this type of analysis (eg, SPM and FSL have non-linear intersubject registration) On 05/04/2018 01:13 PM, David Beeler wrote: > > > Hi Doug, > > funcVol is an individual functional resting state scan. We are doing > s

Re: [Freesurfer] transforming functional volumes to MNI without resampling

2018-05-04 Thread David Beeler
External Email - Use Caution Hi Doug, funcVol is an individual functional resting state scan. We are doing some clustering analyses and trying to visually compare the clustering across subjects (I would be a bit sketched out trying to quantify the overlap between subjects due t

Re: [Freesurfer] transforming functional volumes to MNI without resampling

2018-05-03 Thread Douglas N. Greve
What is funcVol? An individual functional? If so, then use --12 (12 dof to account for scaling). In general, we don't recommend doing cross subject registration with BBR as it is really not appropriate for that kind of thing. On 05/03/2018 01:30 PM, David Beeler wrote: > > > Hi, > > I'm trying