Hi Pedro,
On Oct 7, 2011, at 9:02 , Pedro Paulo de Magalhães Oliveira Junior wrote:
> I have data from 100 monkeys and I need to compare cortical thickness
> among two groups.
>
> In the wiki page there is an entry MonkeyData that has a set of
> scripts which break-down the steps needed, unfortunately I'm having
> trouble with this scripts and FS 5.1
I was somewhat involved with these scripts in the past, I only used
them with 4.5 so far, therefore I do not know what issues you encounter, care
to elaborate what causes the trouble? (BTW the old monkey pipeline will fake
the resolution information in the volume headers so Freesurfer sees 1mm
isotropic and does not go and resamples the data to 1mm, at least for macaques
and smaller monkeys that would throw away too much information in my opinion
(don't know for apes...)). So if you use these scripts for morphometry keep in
mind that all length measurements are off by 1/real_isotropic_voxel_size, area
and volume are therefore off as well; but then this can be easily corrected for
I think...
Now, I hope some other monkey people can chime in and share their
improved freesurfer pipeline :)
Best
Sebastian
>
> Are there an updated version of those procedures?
>
> Thanks
>
> PPJ
>
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