Thanks Matt!

We're using it to just coarsely chop up the surface to build phenotypes.
What atlas would you suggest that we can easily apply with
wb_command -cifti-parcellate?

-Tom

On Mon, Jun 4, 2018 at 4:29 PM, Glasser, Matthew <[email protected]> wrote:

> Hi Tom,
>
> This is because FreeSurfer “fits” the aparc to each subject.  There is
> probably an atlas aparc somewhere inside FreeSurfer that wouldn’t have this
> property.  That does raise the question of why you are using aparc instead
> of one of the more functionally relevant parcellations available in
> standard CIFTI space though.  Aparc is unlikely to follow task boundaries
> much at all.
>
> Matt.
>
> From: <[email protected]> on behalf of Thomas Nichols
> <[email protected]>
> Date: Monday, June 4, 2018 at 2:38 AM
> To: HCP Users <[email protected]>
> Subject: [HCP-Users] Variation in aparc ROIs between subjects in
> 32k_fs_LR space
>
> Hi folks,
>
> Sorry if this is a naive question, but looking for a sanity check...
>
> We're using the aparc segmentations to extract data from the task fMRI
> CIFTI files.  We believe that we're working in atlas space (32k_fs_LR), so
> we were surprised that, when we load two different subjects into wb_view,
> the aparc segmentations are different for different subjects.
>
> See attached images of
>     100206.aparc.32k_fs_LR.dlabel.nii &
>     100307.aparc.32k_fs_LR.dlabel.nii
> The regions are similar but differ slightly, with the white dot showing a
> particular bit of the surface that changes from one ROI to another between
> subjects.  I would have expected this if we were in native space, but not
> 32k_fs_LR.  What am I missing?
>
> Thanks in advance!
>
> -Tom
>
> PS: A similar question was asked on May 9, titled "about the D-K atlas"
> from [email protected] but it hasn't been answered; oddly, while it is in
> my inbox I can't find it in the archive.
>
>
> __________________________________________________________
> Thomas Nichols, PhD
> Professor of Neuroimaging Statistics
> Nuffield Department of Population Health | University of Oxford
> Big Data Institute | Li Ka Shing Centre for Health Information and
> Discovery
> Old Road Campus | Headington | Oxford | OX3 7LF | United Kingdom
> T: +44 1865 743590 | E: [email protected]
> W: http://nisox.org | http://www.bdi.ox.ac.uk
>
> _______________________________________________
> HCP-Users mailing list
> [email protected]
> http://lists.humanconnectome.org/mailman/listinfo/hcp-users
>



-- 
__________________________________________________________
Thomas Nichols, PhD
Professor of Neuroimaging Statistics
Nuffield Department of Population Health | University of Oxford
Big Data Institute | Li Ka Shing Centre for Health Information and Discovery
Old Road Campus | Headington | Oxford | OX3 7LF | United Kingdom
T: +44 1865 743590 | E: [email protected]
W: http://nisox.org | http://www.bdi.ox.ac.uk

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