First, look in the qdec output folder to determine the FWHM in the fwhm.dat file. Assuming the value is 10, you are looking at the left hemisphere, you used a positive tail, and the voxel-wise threshold was 1.3 (p<.05), then you would find the following file
$FREESURFER_HOME/average/mult-comp-cor/fsaverage/lh/cortex/fwhm10/pos/th13/mc-z.cdf This will have 8 columns, but you will be interested in columns 2 and 4 (MaxClustBin and MaxClustCDF). The MaxClustCDF is the p-value for the given cluster size MaxClustBin. Eg, on line 25: 25 473.758087 0.021000 0.169000 0.045775 11.261296 0.002800 0.325000 indicates that the clustersize must be at least 473.758 to have a cluster p-value of .045775 clear? doug On 01/05/2016 08:35 PM, Tara Miskovich wrote: > Hello Freesurfer experts, > > I need help me finding how to get the minimum number of vertices > required to pass the cluster-corrected threshold with monte carlo > simulations used in qdec for a surface based analysis? > > This is per a reviewer request, but I cannot find anything on the wiki > or in the mail archives on how to get this value. > > Can someone please help me with this issue? > > -- > Thank you, > > Tara > > > _______________________________________________ > Freesurfer mailing list > Freesurfer@nmr.mgh.harvard.edu > https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer -- Douglas N. Greve, Ph.D. MGH-NMR Center gr...@nmr.mgh.harvard.edu 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 Freesurfer@nmr.mgh.harvard.edu 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.
