Hi shay
Are you using mri_vol2surf to sample it onto the surface before displaying in tksurfer? If so, you get to choose how to sample and interpolate?
Cheers
Bruce
> _______________________________________________
On Jun 2, 2012, at 9:43 PM, Shay Ohayon <shay.ohayon@gmail.com> wrote:
> Hi,
>
> I have another silly question. When a functional overlay (say, log p-value map) is loaded to tksurfer, how exactly are the surface vertex values computed? using simple interpolation of the loaded map? or is it something
> more fancier, like looking along the normal of each surface face and taking the maximum/minimum?
> The reason I'm asking is because if surface vertices are interpolated exactly using the loaded volume, they don't fall on gray matter (right? either I use the white matter surface or the pial surface, where activation should be in between...)
>
> Thanks in advance,
>
> Shay
> Tsao Lab
> Caltech
>
>
> Freesurfer mailing list
> Freesurfer@nmr.mgh.harvard.edu
> https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer
The information in this e-mail is intended only for the person to whom it is
addressed. If you believe this e-mail was sent to you in error and the e-mail
contains patient information, please contact the Partners Compliance HelpLine at
http://www.partners.org/complianceline . If the e-mail was sent to you in error
but does not contain patient information, please contact the sender and properly
dispose of the e-mail.