Rishi,
There is no generic 'best answer', and the choice of cuts depends on
multiple factors, some related to visualization and others related to
options for subsequent registration to an atlas.
The first question is whether you need to make any cut at all. That
depends on how large your frontal region is and how much in the way of
distortion you're willing to tolerate.
Assuming that you do decide to make a cut (or perhaps multiple cuts),
one objective is to keep the cut(s) away from regions where there's a
lot of interesting data.
If you will be analyzing multiple cases with the same basic layout,
then you should also aim for consistency. For example, a cut along the
ventro-medial convexity, up to the frontal pole, might be a good idea,
as this is easily delineatedwhen viewing maps of folding/curvature.
Or if there's lots of good ventral data you might make the cut along
the dorsomedial convexity.
Assuming (based on previous communications) that you are planning to
register the individual maps to an atlas and that you will use
spherical registration
(http://brainmap.wustl.edu/pub/donna/RISHI/PARTIAL_HEM_REG/), then the
location of the cuts should not be critical for registration purposes.
If, on the other hand, you are countenancing registration of an
individual flat map to the atlas target, then it is advisable to make
your cuts match those of the atlas (either the 'standard' cuts or the
'lobar' cuts).
Hope this helps.
David
On Nov 4, 2005, at 1:44 PM, Rishi Kalwani wrote:
Hi,
So I'm trying to make a frontal cortex into a flat map and am
following tutorial
5's guidlines...however, I don't know what to cut in the frontal
cortex in place
of the calcarine sulcus as suggested for flattening a occipital lobe.
Any
suggestions? thanks
rishi
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