Re: [Freesurfer] regarding mkanalysis-sess.new and brainmasks

2006-04-10 Thread Sebastian Moeller
Hi Doug, hi List, On 10. Apr 2006, at 20:28 Uhr, Doug Greve wrote: I usually set it to about 20 sec (the interpretation of this parameter is that the temporal autocorrelation will return to 0 beyond this spacing). The brain mask is used to restrict the voxels overwhich the autocorrelation i

Re: [Freesurfer] regarding mkanalysis-sess.new and brainmasks

2006-04-10 Thread Doug Greve
I usually set it to about 20 sec (the interpretation of this parameter is that the temporal autocorrelation will return to 0 beyond this spacing). The brain mask is used to restrict the voxels overwhich the autocorrelation is computed and averaged (don't want to include "air" voxels in the co

[Freesurfer] regarding mkanalysis-sess.new and brainmasks

2006-04-09 Thread Sebastian Moeller
Hi All, as the subject line reveals, I have a question regarding mkanalysis-sess.new (running centos4_x86_64 3.0.1 pub stable, on SuSE 9.3, not that it matters...). My question is, is there any heuristic how to chose the -taumax parameter, that can be used in combination with a brainmask? I a