yes, I agree. I will explore both
thank you!
Angela
>
> That is, going back to your earlier post, I personally don’t find it all
> that interesting whether a given brain area is atrophic relative to head
> size, especially in the situation where many regions are atrophic (i.e.,
> global atrophy).
That is, going back to your earlier post, I personally don’t find it all
that interesting whether a given brain area is atrophic relative to head
size, especially in the situation where many regions are atrophic (i.e.,
global atrophy). I’m more interested in knowing whether the atrophy in a
given
Even assuming one had a true measure of TIV, if you get meaningfully
different results when using TIV vs. brain size as a covariate, isn’t that
a rather important thing to point out?
cheers,
-MH
--
Michael Harms, Ph.D.
---
Conte Center for
Hi Angela
yes, although if the eTIV is (incorrectly) correlated with atrophy you
may be removing some of your effect (and slightly reducing your power)
cheers
Bruce
On
Mon, 22 Feb 2016, angela.fav...@unipd.it wrote:
Hi Bruce,
this is true, but I noticed that many papers used TIV as a covar
Hi Bruce,
this is true, but I noticed that many papers used TIV as a covariate. In
addition, in my samples (both pathological and healthy) there is a
moderate positive correlation between gyrification and TIV (and brain
volume). For the hemispheric overall gyrification index the correlation is
0.3-
Hi Angela
gyrification is the ratio of areas and hence dimensionless, so I would
think it wouldn't be much affected by TIV.
cheers
Bruce
On Sun, 21 Feb 2016, angela.fav...@unipd.it wrote:
In the case of a gyrification analysis, does correction for total brain
volume make sense?
Angela
In
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