Hi all, First of all, Freesurfer V6 is working like a dream, my 0.7 mm segmentations are running really well and in comparisons to hi-resrecon in 5.3 and early beta, I'm having to do fewer manual corrections!
Now for my questions, 1. I'm running mri_mcsim in order to correct for multiple comparisons via the FS-FAST stream. I'm wondering how many iterations are advised, and how can one check for convergence in an automatic fashion. I've run the simulations with 1000 and 10,000 iterations on a 1mm segmentation with the FWHM simulations at 8mm. (i.e. using mri_mcsim --o . --base mc-z --save-iter --surf subject lh/rh --nreps 10000 --fwhm 8) and I can't see many differences between the two when correcting for multiple comparisons (i.e. using cluster-sess -analysis myanalysis -thresh 3 -cwp .05 -s SESSION -sign pos). 2. I'm trying to find some references that detail the simulations and form the corrections, does anyone have advice which list I can read/start off with, as well as some key papers that use it (esp on a single subject level). I really like this approach and It does look to circumvent (I think...) a lot of the problems of cluster-wise corrections described with Eklund et al. (Cluster failure paper). Cheers, *Dr Kevin Aquino* Research fellow, Sir Peter Mansfield Magnetic Resonance Center, The University of Nottingham. Honorary Research Fellow School of Physics, Faculty of Science, University of Sydney *E* kevin.aqu...@nottingham.ac.uk, aqu...@physics.usyd.edu.au | *W* https://kevinaquino.github.io <http://www.physics.usyd.edu.au/~aquino/> ---------------------------------------------- The brain is a wonderful organ. It starts working the moment you get up and does not stop until you get into the office. - Robert Frost CRICOS 00026A This email plus any attachments to it are confidential. Any unauthorised use is strictly prohibited. If you receive this email in error, please delete it and any attachments. Please think of our environment and only print this e-mail if necessary.
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