Re: [Freesurfer] cluster size threshold

2020-02-24 Thread Douglas N. Greve


You need to find the correct CDF file, eg, if the final FWHM is 12, it 
would be in
$FREESURFER_HOME/average/mult-comp-cor/fsaverage/lh/cortex/fwhm12/abs/th30/mc-z.cdf 


To get the FWHM look in glmdir/fwhm.dat and round down
in the mc-z.cdf file, find the row where the MaxClustCDF drops below 
.05/2=.025, then look at the MaxClustBin for the critical cluster size


On 2/24/2020 6:49 AM, Elisa Castaldi wrote:


External Email - Use Caution

Dear experts,

To perform a Monte Carlo based cluster correction, I have run the 
following line:


mri_glmfit-sim --glmdir glmdir --mczsim 3 abs --cwp 0.05 --2spaces 
--a2009s


I need to figure out which is the minimum number of voxels required 
for a cluster to be considered significant.
In other words, which is the cluster _size_ threshold in this case? 
Where can I find this information?


Thanks
Elisa

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[Freesurfer] cluster size threshold

2020-02-24 Thread Elisa Castaldi
External Email - Use Caution

 Dear experts,

To perform a Monte Carlo based cluster correction, I have run the following
line:

mri_glmfit-sim --glmdir glmdir --mczsim 3 abs --cwp 0.05 --2spaces --a2009s

I need to figure out which is the minimum number of voxels required for a
cluster to be considered significant.
In other words, which is the cluster *size* threshold in this case? Where
can I find this information?

Thanks
Elisa
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Re: [Freesurfer] Cluster size threshold for the sig.mgh file

2009-08-05 Thread Douglas N Greve
Use the --minarea option

doug

Jürgen Hänggi wrote:
 Dear FS experts

 We would like to threshold the cluster size in the sig.mgh image in order to
 exclude clusters that are only a few vertices in size, but I cannot find
 this option

 Is it possible to do it within FS? If yes, how to do it?

 Thanks in advance
 Regards
 Jürgen

 
 Juergen Haenggi
 Ph.D. (Dr. des.)
 Division Neuropsychology
 Institute of Psychology
 University of Zurich
 Binzmuehlestrasse 14, PO Box 25
 8050 Zurich, Switzerland
 0041 44 635 73 97 (phone office)
 0041 76 445 86 84 (phone mobile)
 0041 44 635 74 09 (fax office)
 BIN 4.D.04 (office room number)
 j.haenggi[at]psychologie.uzh.ch (email)
 http://www.psychologie.uzh.ch/neuropsy/ (website)
 http://www.juergenhaenggi.ch (private website)

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