External Email - Use Caution
Hi Bruce,
You are right.
There was a silly bug in my plotting script which I managed to fix.
So now everything is at its place!
Thank you very much for your patience and support!
Giulia
2018-05-25 15:52 GMT+02:00 Bruce Fischl <fis...@nmr.mgh.harvard.edu>:
> Hi Giulia,
>
> no, that shouldn't be the case. You don't care about the RAS coordinates
> of the inflated vertex - only its index. Use the index to look up the
> corresponding vertex on another surface like white, then use its RAS
> coords. Should work for any spot in the brain.
>
> cheers
> Bruce
> On Fri, 25 May 2018, Giulia
> Liberati wrote:
>
> >
> > External Email - Use Caution
> >
> > Thank you Bruce,
> >
> > Yes, this is what I did.
> >
> > Because the insular contacts are not in the insula anymore after I use
> the vertex to find the RAS
> > coordinates for the inflated surface, my conclusion is that this only
> works with surface electrodes,
> > not depth electrodes.
> >
> > Best wishes,
> >
> > Giulia
> >
> > On Thu, 24 May 2018 at 23:22, Bruce Fischl <fis...@nmr.mgh.harvard.edu>
> wrote:
> > Hi Giulia
> >
> > find the vertex index of the vertex you are interested in, then
> read the
> > surface whose RAS coordinates you want (e.g. the white or pial) and
> > lookup the RAS coords of the vertex at that index.
> >
> > cheers
> > Bruce
> > On Thu, 24 May 2018,
> > Giulia Liberati wrote:
> >
> > >
> > > External Email - Use Caution
> > >
> > > Dear FreeSurfer experts,
> > > How can you obtain RAS coordinates for an inflated surface when
> you have vertex #?
> > >
> > > I am using the function read_surf('lh.inflated') to find the
> coordinates of some
> > electrode contacts
> > > located in the left insula. However, when I plot the coordinates
> using plotPialSurf
> > (iElVis), these
> > > locations are completely off (i.e., far outside from the insula).
> > >
> > > I don't understand what is going wrong.
> > >
> > > Any possible explanation?
> > >
> > > Thanks in advance!
> > >
> > > Giulia
> > >
> > >
> > >
> > >
> > > --
> > > Giulia Liberati, PhD
> > >
> > > Institute of Neuroscience (IoNS)
> > > Université catholique de Louvain
> > > Avenue Mounier 53 bte B1.53.02 à 1200 Woluwe-Saint-Lambert
> > > Claude Bernard; Etage 02; Local 0826; Site Bruxelles Woluwe
> > > Brussels, Belgium
> > >
> > >
> >
> > --
> > Giulia Liberati, PhD
> >
> > Institute of Neuroscience (IoNS)
> > Université catholique de Louvain
> > Avenue Mounier 53 bte B1.53.02 à 1200 Woluwe-Saint-Lambert
> > Claude Bernard; Etage 02; Local 0826; Site Bruxelles Woluwe
> > Brussels, Belgium
> >
> >
>
--
Giulia Liberati, PhD
Institute of Neuroscience (IoNS)
Université catholique de Louvain
Avenue Mounier 53 bte B1.53.02 à 1200 Woluwe-Saint-Lambert
Claude Bernard; Etage 02; Local 0826; Site Bruxelles Woluwe
Brussels, Belgium
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