I have some questions regarding how MRI_vol2surf works.  More specifically, how does it handle the vertices when performing the process.  

If the same vertex is the closest to multiple locations on the surface file, is it projected to all those locations?  If so, is there any limit?  or will it project that activity to every location it can?

Or, is the activity at each vertex only allowed to be projected to a single location on the inflated surface?

Thank you for your time.