then the ?h.white is probably the way to go
On Tue, 25 Jan 2011, Gabriele 
Arnulfo wrote:

> The electrodes are quite long they're length vary from 10cm up to 15cm
> depends on the subject. they usually have been implanted quite deep in the
> brain.
>
> cheers,
>
> g.
>
> 2011/1/25 Bruce Fischl <fis...@nmr.mgh.harvard.edu>
>
>> Hi Gabriele
>>
>> inflated is definitely wrong as it has no meaning in the MRI coords. Any
>> idea how deep the electrodes are? The white might be best as it will
>> minimize the chances of erroneously assigning the electrode to the wrong
>> bank of a sulcus.
>>
>>
>> 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 <fis...@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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>>>
>>>
>
>
>
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