[Mne_analysis] Vertex mapping for fsaverage

[sheraz at nmr.mgh.harvard.edu]

Hi Tim,

One word of caution, if you do your analysis in matlab add 1 as in matlab
index start from 1, in C or python, index start from 0, so you dont need
to add 1.

Sheraz


> Hi Tim,
>
> There is vertices field inside stc structure if you open it in Matlab.
> Just add 1 to it, it will correspond to vertices on fsaverage brain.
>
>
> stc = mne_read_stc_file(stcfile);
> fsAverageVertices=1+squeeze(stc.vertices(:,1));
>
>
>
> Regards
>
> Sheraz
>
>
>
>> Hi there,
>>
>> Sorry if this question has already been answered. If so, please point me
>> to the appropriate thread.
>>
>> I am doing some group stats analysis on my dSPM .stc maps after morping
>> to
>> the fsaverage space. When I load the morphes .stc maps into Matlab I
>> have
>> 10242 vertices per hemisphere, but the structure that is generated by
>> mne_read_stc_file does not indicate (for each vertex) which is the
>> corresponding vertex on the fsaverage anatomical surface. This
>> information
>> must be somewhere, however, as I can view the .stc maps on the fsaverage
>> brain in mne_analyze.
>>
>> I'd like to get access to this mapping to help me interpret the results.
>> Is there a way to access this information?
>>
>> Thanks,
>> Tim.
>>
>> ---------------------------------------------------------
>> Timothy Bardouille, PhD, Research Officer
>> Laboratory for Clinical MEG
>> NRC Institute for Biodiagnostics (Atlantic)
>> Office: Halifax Infirmary
>> 3900 - 1796 Summer Street
>> Halifax, Nova Scotia B3H 3A7
>> Phone: 902-473-1865
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>> Fax: 902-473-1851
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