On 01/24/2014 11:54 AM, Natasha Haris wrote: > Dear Freesurfers, > > I am slightly confused about the monte carlo simulation. > > First off, I only find a blob when I run the p<0.05 threshold level and don't > see anything else when I run simulations with p less than that. What does > this mean? Which threshold level? clusterforming/voxelwise or clusterwise? If clusterwise, then it just means that you have a cluster whose p value is just under .05 so you lose it by going to a more stringent threshold. > > Additionally, when I click on any question of interest after running this > p<0.05 simulation (for ex. "Does the average thickness, accounting for Group, > differ between male and female?" I get the same blobs that I found before I > ran this precomputed simulation. Is the simulation not running correctly? Am > I supposed to enter this threshold value (1.3) into the area marked Threshold > min= and max=5. Are you sure it is exactly the same? Look to see if there are some very small blobs that disappear. Otherwise, it may be that the blobs you have are all significant. > > Thank you for your help! > Natasha > _______________________________________________ > Freesurfer mailing list > [email protected] > https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer > >
-- Douglas N. Greve, Ph.D. MGH-NMR Center [email protected] Phone Number: 617-724-2358 Fax: 617-726-7422 Bugs: surfer.nmr.mgh.harvard.edu/fswiki/BugReporting FileDrop: https://gate.nmr.mgh.harvard.edu/filedrop2 www.nmr.mgh.harvard.edu/facility/filedrop/index.html Outgoing: ftp://surfer.nmr.mgh.harvard.edu/transfer/outgoing/flat/greve/ _______________________________________________ Freesurfer mailing list [email protected] https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer The information in this e-mail is intended only for the person to whom it is addressed. If you believe this e-mail was sent to you in error and the e-mail contains patient information, please contact the Partners Compliance HelpLine at http://www.partners.org/complianceline . If the e-mail was sent to you in error but does not contain patient information, please contact the sender and properly dispose of the e-mail.
