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
greve@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/
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