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 The MGHTools -> Smooth(Curv)/Inflate(Sulc) makes
 two deformations of the "orig" surface data and
 three data files from the deformation process
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(1a) Smooth Right Hemisphere White Matter
(1b) Smooth Left Hemisphere White Matter

The reconstructed white matter surface of the
right and left hemispheres is smoothed using
mris_smooth.  The output files written by this
procedure are:

Input files:

 surface: $SUBJECTS_DIR/$name/surf/rh.orig
 surface: $SUBJECTS_DIR/$name/surf/lh.orig

Output files:

 surface: $SUBJECTS_DIR/$name/surf/rh.smoothwm
 surface: $SUBJECTS_DIR/$name/surf/lh.smoothwm
 vertexdata: $SUBJECTS_DIR/$name/surf/rh.curv
 vertexdata: $SUBJECTS_DIR/$name/surf/lh.curv
 vertexdata: $SUBJECTS_DIR/$name/surf/rh.area
 vertexdata: $SUBJECTS_DIR/$name/surf/lh.area

The $hemi.curv files record slightly smoothed
local curvature.  Note that this may be convex
deep inside a sulcus because most sulci have
secondary crinkles.

(2a) Inflate Right Hemisphere
(2b) Inflate Left Hemisphere

The right and left hemisphere gray/white matter
surfaces are inflated using mris_inflate, while
while attempting to preserve local angles and
area.  The output files written by this procedure
are:

 surface: $SUBJECTS_DIR/$name/surf/rh.inflated
 surface: $SUBJECTS_DIR/$name/surf/lh.inflated
 vertexdata: $SUBJECTS_DIR/$name/surf/rh.sulc
 vertexdata: $SUBJECTS_DIR/$name/surf/lh.sulc

The $hemi.sulc files record the summed
perpendicular movement of each vertex and are
used by mris_register for cross subject surface
alignment.

See Help -> Smooth/Curv/Inflate/Sulc for details
of parameter hack for unfolding hi-res surfaces.
