projdist would be 0 since you want to sample right on the surface
location. I don't think you need a mask
On Fri, 25 Sep 2015, Yun Wang wrote:
Thanks! Again I want to make sure when using mri_vol2surf for my case
the options
—surf : my layer surface ?
—projdist : how should I use this?
—mask: the label that I want use V1?
On Sep 25, 2015, at 11:18, Bruce Fischl <fis...@nmr.mgh.harvard.edu> wrote:
Hi Yun
just specify the surface you want in mri_vol2surf to generate a time series
per-vertex on each surface, then you can average each of those within the V1
ROI if you want.
cheers
Bruce
On Fri, 25 Sep 2015, Yun Wang wrote:
But the question is how to sample different layer surface ’s functional data in
one or multiple ROI.
Thanks!
Yun
On Sep 25, 2015, at 10:59, Bruce Fischl <fis...@nmr.mgh.harvard.edu> wrote:
you want to extract the time series from an fMRI volume in say "deep" and
"superficial" V1? If so, then I think what you want is 3 intermediate surfaces between
white and pial, then sample using surfaces 1 and 3 (but not 2, which would be the boundary between
the top half and the bottom half).
cheers
Bruce
On Fri, 25 Sep 2015, Yun Wang wrote:
Hi All,
I have two questions:
1 I have used mris_expand to get additional two layer surface between
white and pial surface. what I want to do next : using label such as V1 as ROI,
then get different layer ROI in V1. How can I get it?
2 After I get layers’ ROI, I want to extract the time series . Anyone have idea?
Thanks!
Yun Wang
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