no, the vertex index is essentially arbitrary and you can't use it to compare left and right. Doug had some tools for this, but I'm not sure whether they are ready for primetime yet.

cheers, Bruce

On Sun, 18 Jan 2009, Zhangyuanchao wrote:

Dear Expert,   I want to exame the symmetry property of two hemispheres,for example, symmetry of cortical thickness or lgi,  I want to know whether the same ID of the two hemispheres after resampling using the average pial surface corespond to the same anatomical region.       For example,   ID=1000, For the left hemisphere, the vertex 1000 corespond to 'medial_wall'; what about the vertex 1000 on the right hemisphere? Is it also corespond to the same anatomical region "medial_wall" so that we can compare their cortical thickness of vertex 1000 on both left and right hemisphere to exame the symmetry property.

Thanks a lot! yczhang

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