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