The 4th column is the gray matter volume ("GrayVol").
doug
Ed Gronenschild wrote:
> Doug,
>
> I don't understand this since the ?h.aparc.stats file doesn't
> contain volumes.
>
> Ed
>
> On 18 Jun, 2010, at 15:56, Douglas N Greve wrote:
>
>
>> Yes, the difference is partial volume correction. B
Doug,
I don't understand this since the ?h.aparc.stats file doesn't
contain volumes.
Ed
On 18 Jun, 2010, at 15:56, Douglas N Greve wrote:
> Yes, the difference is partial volume correction. But you should
> use the
> values from the ?h.aparc.stats file for cortical parcellations as it
> uses
Yes, the difference is partial volume correction. But you should use the
values from the ?h.aparc.stats file for cortical parcellations as it
uses the more accurate surface-based volumetric calculation.
doug
Ed Gronenschild wrote:
> But what about the labels starting with "lh-ctx-"
> and "rh_ct
use aseg.stats for the subcortical volumes. There is a difference
between aseg.stats and wmparc.stats for the subcortical volumes because
of the partial volume correction.
Ed Gronenschild wrote:
> Hi,
>
> I tried to find out this from previous contributions
> but got lost.
> There's some confusi
But what about the labels starting with "lh-ctx-"
and "rh_ctx-", like for instance lh-ctx-fusiform (index=1007).
In the wmparc.stats file it has a volume of 8249
voxels and in wmparc.mgz 8752 voxels?
Is the first pve-corrected and the latter not?
On 18 Jun, 2010, at 13:43, Allison Stevens wrote:
You're right - aseg.stats refers to the aseg.mgz and you should use that.
You would only use the wm parcellations from the wmparc.mgz
--
On Fri, 18 Jun 2010, Ed Gronenschild wrote:
> Hi,
>
> I tried to find out this from previous contributions
> but got lost.
> There's some confusion on which
