Ben might be using Oliver Lyttelton's mean MNI152 surface (i.e., the 
average of all 152 subjects' surfaces on the MNI mesh, as registered 
using CIVET).

On 09/09/2009 11:31 AM, Bruce Fischl wrote:
> Hi Ben,
>
> I would be pretty surprised if you can get a reasonable surface from the 
> MNI152. I would have thought it was too blurry to distinguish many of the 
> gyri from one another.
>
> That said, if you do have one, you can make labels in the volume and sample 
> them onto the surface with tksurfer by just loading them.
>
> cheers,
> Bruce
>
> On Tue, 8 Sep 2009 benjamin.d...@yale.edu wrote:
>
>   
>> Hi,
>>
>> I didn't generated the surface myself (a technician in my lab did), but I
>> imagine it entailed the same process as for a subject, just using the MNI152
>> brain instead of a single individual's anatomical image.  I'm hoping to find
>> the location on this surface of several peak coordinates from past studies, 
>> so
>> that I can present the results of an informal meta-analysis by drawing dots 
>> (or
>> some such) at these locations on an image of the surface.  Thanks,
>>
>> Ben
>>
>> Quoting Bruce Fischl <fis...@nmr.mgh.harvard.edu>:
>>
>>     
>>> Hi Ben,
>>>
>>> I'm still confused. How do you get a surface from an MNI average? Or is it 
>>> from the colin dataset? Can you tell us a bit more about what you are 
>>> trying to do so we can see if we can help?
>>>
>>> cheers,
>>> Bruce
>>> On Tue, 8 Sep 2009 benjamin.d...@yale.edu wrote:
>>>
>>>       
>>>> Hi,
>>>>
>>>> The surface isn't from an individual subject, but generated from MNI space
>>>> itself.  What exactly do you mean by sample it onto the surface?  I could 
>>>> make
>>>> an image file with value one at the coordinate of interest and zero 
>>>> elsewhere,
>>>> and then overlay it on surface space and see where it lies, but it would 
>>>> be
>>>> rather tedious to do this for each of the coordinates I'm interested in 
>>>> (about
>>>> 30), so I'm wondering if there is a faster way.  Granted, some of them may 
>>>> not
>>>> lie on cortical surface.
>>>>
>>>> Ben
>>>>
>>>> Quoting Bruce Fischl <fis...@nmr.mgh.harvard.edu>:
>>>>
>>>>         
>>>>> Hi Ben,
>>>>>
>>>>> any given MNI coordinate may or may not be on the surface of a subject. 
>>>>> You can convert it to individual subject space then sample it onto the 
>>>>> surface.
>>>>>
>>>>> cheers,
>>>>> Bruce
>>>>> On Tue, 8 Sep 2009 benjamin.d...@yale.edu wrote:
>>>>>
>>>>>           
>>>>>> Hi,
>>>>>>
>>>>>> I'm wondering how to convert a single voxel coordinate in 2mm MNI152 
>>>>>> space to a
>>>>>> location on a cortical surface representation of MNI space generated by
>>>>>> Freesurfer.  My broader goal is to present a set of coordinates 
>>>>>> collected for a
>>>>>> meta-analysis on surface space.  Thanks,
>>>>>>
>>>>>> Ben Deen
>>>>>> Department of Psychology, Yale University
>>>>>> _______________________________________________
>>>>>> Freesurfer mailing list
>>>>>> Freesurfer@nmr.mgh.harvard.edu
>>>>>> https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer
>>>>>>
>>>>>>
>>>>>>
>>>>>>             
>>>>
>>>>
>>>>         
>>
>>
>>     
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