'''DISCLAIMER NOTE'''

THIS PAGE NEEDS FIGURES and some further edits.

'''CUTTING AND FLATTENING SURFACES'''

This process is optional and provides the user with flattened images of the whole brain or select parts (e.g. occipital lobe) of the brain. Cutting the Full Surface The full surface represents an entire hemisphere without the mid-brain (middle of the medial surface). Select Make Full Surface Cuts from the Subject Tools menu in csurf:

1. Make 5 relaxation cuts. For each cut, select the points (LEFT-CLICK) and then press LINE. || · 1 cut down the calcarine (same cut as for the occiput surface) ||

· 3 equally spaced radial cuts on the medial surface

· 1 sagitally oriented cut around the temporal pole

2. Encircle midline region (corpus callosum and mid-brain structures) to remove:

· LEFT-CLICK sequence

3. Make closed-line cut.

· CUTAREA button

4. Mark and fill region to save.

· Single left-click in region to save.

· Press FILL button.

5. Save patch.

· Specify the patch name in the patch field and press WRITE.

...

The default names for the full cortical surfaces with the midline removed are:

rh.full.patch.3d

lh.full.patch.3d

'''Cutting the Occiput Surface'''

Select Make Occip Surface Cuts from the Subject Tools menu in csurf:

1. Make calcarine sulcus relaxation cut.

· Select points (left-click) along the calcarine fissure beginning at the occipital pole and moving anteriorly.

· Open-line cut with CUTLINE (surfer tools).

2. Specify cutting plane.

· Select three points (labeled 1, 2, and 3 below) to define the cutting plane, and a fourth point (labeled 4 below) to specify which portion of the surface to keep (left-click).

3. Make the planar cut.

· CUTPLANE button.

4. Save patch.

· Specify the patch name in the patch field and press WRITE.

...

The default names for the occiput cortical surfaces are:

rh.occip.patch.3d

lh.occip.patch.3d