Yes, this is confusing. We can apply a transform to the MNI305 coords to get
approx Tal coords. If QDEC is showing you "Tal" coords, then this is what has
happened. I don't know what other papers reported. If they used the command
line stream (ie, no QDEC), then it is probably MNI305
On 8/22/2019 4:01 PM, Avi Gharehgazlou wrote:
External Email - Use Caution
Hi,
Thank you so much for your reply
I reviewed the link you sent and now know how to convert MNI305 to MNI 152
coordinates based on example of Case 8.
However, I am still confused regarding my question number 1... When I use QDEC
to do my own analyses of lGI QDEC gives me Tal x,y,z (Talairach) coordinates in
mc-z.abs.th13.sig.cluster.summary file. Wouldn't this mean that the coordinates
reported in other lGI papers is also in Talairach space? But you say these
coordinates are in MNI305 (fsaverage) space...
Will you please clarify this for me?
Thanks so much,
Avi
On Tue, Aug 13, 2019 at 6:36 PM Greve, Douglas N.,Ph.D.
<dgr...@mgh.harvard.edu<mailto:dgr...@mgh.harvard.edu>> wrote:
Those coordinates are in mni305 space. See this page, case 8
https://surfer.nmr.mgh.harvard.edu/fswiki/CoordinateSystems
On 8/13/19 1:56 PM, Avi Gharehgazlou wrote:
>
> External Email - Use Caution
>
> Hi,
>
> I am conducting a meta-analysis on papers that have looked at local
> gyrification index (lGI) in Autism Spectrum Disorder (ASD) relative to
> typically developing (TD) peers.
>
> All lGI papers have used the FreeSurfer software and have reported
> x,y,z coordinates for their significant clusters (in which lGI in ASD
> is different from TD).
>
> Please help me with the below 2 questions:
>
> 1. My understanding is that these coordinates reported in lGI papers
> are "surface coordinates" (of fsaverage). Is this correct?
>
> 2. How can I convert these x,y,z surface coordinates to MNI space
> coordinates?
>
> I'd really appreciate your reply,
>
> Thanks so much,
>
> Avi
>
>
> _______________________________________________
> Freesurfer mailing list
> Freesurfer@nmr.mgh.harvard.edu<mailto:Freesurfer@nmr.mgh.harvard.edu>
> https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer
_______________________________________________
Freesurfer mailing list
Freesurfer@nmr.mgh.harvard.edu<mailto:Freesurfer@nmr.mgh.harvard.edu>
https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer
_______________________________________________
Freesurfer mailing list
Freesurfer@nmr.mgh.harvard.edu<mailto:Freesurfer@nmr.mgh.harvard.edu>
https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer
_______________________________________________
Freesurfer mailing list
Freesurfer@nmr.mgh.harvard.edu
https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer
