Dear Freesurfer Experts.

Is there a way to create a freesurfer surface label from entering a MNI152 coordinate? I would like to extract cortical thickness data from fMRI peak activation coordinates.

I am aware that I can use tcl with tksurfer:

mar_vertex X 1 labl_new_from_marked_vertices labl_dilate

However as far as I know I can only input vertex numbers, not coordinates.

Any helpt would be greatly appreciated!