cheers
Bruce
On Tue, 25 Jan 2011, Gabriele Arnulfo wrote:
Hi Bruce,
I've a list of intra cerebral electrodes channel position segmented out from
the MRI scans. I would like to convert the computed positions from the MRI
scanner space to freesurfer vertexes. I've already transformed the
coordinates of each point from indexes to Cartesian Space values (in the
scanner RAS space). I'm looking to find which is the right surface to use
the inflated or the pial surface to compute the nearest vertex for each
point.
Does this short description clarify a little bit more my goal?
cheers,
g.
2011/1/25 Bruce Fischl <fischl@nmr.mgh.harvard.edu>
Hi Gabriele,
what are you trying to accomplish? The "right choice" depends on your
goals.
cheers
Bruce
On Tue, 25 Jan 2011, Gabriele Arnulfo wrote:
Hi again,
looking in previous emails in the list i found that the best way to find
the
nearest vertex number to a certain point is by using the matlab script
mesh_vertex_nearest. So far I've used it with input parameters: the
vertices
read through read_surf(rh_pial) and a matrix of Cartesian Coordinates. In
this context I'd like to know which surface is the right choice, if there
should be a choice. I've inserted either the pial and inflated surface
having different result (vertex index) for the same point (RAS xyz).
Cheers,
g.
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