yes, just note that they are somewhat different hypothoses that you are
testing as noted by Mike in the past. If you use average surface
area/thickness you are testing the hypothesis that part of the brain is not
changing/different relative to the average. If you control for TIV (or the
2/3
Hi Clara,
Yes- my apologies. I misunderstood your initial analyses description.
Sounds right to me as well.
- Arkadiy
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Gesendet: Montag, 4. Juli 2016 15:37:57
Betreff: Re: [Freesurfer] controlling for total gray matter volume
sounds right to me
Bruce
On Mon, 4 Jul 2016, Clara Kühn wrote:
I have decided now to not control for ICV or total gray matter volume
when looking at cortical thickness
ols for tGM only for area and not CT.
Cheers Clara
- Ursprüngliche Mail -
Von: "Bruce Fischl" <fis...@nmr.mgh.harvard.edu>
An: "Freesurfer support list" <freesurfer@nmr.mgh.harvard.edu>
Gesendet: Montag, 4. Juli 2016 15:37:57
Betreff: Re: [Freesurfer] contro
quot; <fis...@nmr.mgh.harvard.edu>
An: "Freesurfer support list" <freesurfer@nmr.mgh.harvard.edu>
Gesendet: Montag, 4. Juli 2016 15:37:57
Betreff: Re: [Freesurfer] controlling for total gray matter volume
sounds right to me
Bruce
On Mon, 4 Jul 2016, Clara Kühn wrote:
> I have
Ok, thanks!
- Ursprüngliche Mail -
Von: "Bruce Fischl" <fis...@nmr.mgh.harvard.edu>
An: "Freesurfer support list" <freesurfer@nmr.mgh.harvard.edu>
Gesendet: Montag, 4. Juli 2016 15:37:57
Betreff: Re: [Freesurfer] controlling for total gray matter volume
so
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Von: "Arkadiy Maksimovskiy" <arkad...@bu.edu>
An: freesurfer@nmr.mgh.harvard.edu
Gesendet: Samstag, 2. Juli 2016 18:36:51
Betreff: Re: [Freesurfer] controlling for total gray matter volume
Hi Clara,
If I am understanding your question correctly, you don't
ot; <arkad...@bu.edu>
An: freesurfer@nmr.mgh.harvard.edu
Gesendet: Samstag, 2. Juli 2016 18:36:51
Betreff: Re: [Freesurfer] controlling for total gray matter volume
Hi Clara,
If I am understanding your question correctly, you don't need to control for
brain volume when looking at thickness analy
volume (Clara K?hn)
>2. cotrolling for total gray matter volume (Clara K?hn)
>
>
> --
>
> Message: 1
> Date: Thu, 30 Jun 2016 15:19:43 +0200 (CEST)
> From: Clara K?hn <cku...@cbs.mpg.de>
> Subject: [Freesurfer] con
Dear FreeSurfer experts,
I would like to look at longitudinal thickness data and want to control for
total gray matter volume. Should I use that information from the CROSS before
anything has been registered and smoothed or from the LONG after they have been
registered to the BASE?
Also I was
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