Thanks for the replay, Nick!

On Monday 27 October 2008 16:48:26 Nick Schmansky wrote:
> Martin,
>
> To answer question 1, the fsaverage surface is used as a target surface
> to which the data (ie thickness) of each subject in the group is sampled
> and then smoothed, so the accuracy of the recon of the fsaverage subject
> itself is not relevant to accuracy of the group analysis.

Thanks, it's clear now.

>
> For 2., unfortunately, the only way to get qdec to recognize ?h.pial_lgi
> is via the 'hack' that you mention: renaming the files as 'thickness'.
> A feature to be added to qdec is the reading of a text configuration
> file to allow selection of arbitrary surface data files into the qdec
> menu.  Actually, I think I might implement that feature this week, as I
> hate that hack

Sorry, I could not come up with something more pleasant.
:D

> , and can post this version of qdec for you if you want. 

That would be great, though I do not want to press you!

> For 3., I think you are in new territory here, the first to do this, so
> you will have to experiment.  Although 0mm smoothing, as you suggest,
> seems reasonable.

OK. I'll give it a try!

Thanks,

Martin
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