Great! Thank you for all the help.

On Wed, Jan 6, 2016 at 12:38 PM, Douglas N Greve <greve@nmr.mgh.harvard.edu> wrote:
Yes. In theory you can compute the number of vertices by dividing by the
average vertex area

On 01/06/2016 01:34 PM, Tara Miskovich wrote:
> Thank you for the clarification. So even though it is a vertex-wise
> threshold, there is no minimum amount of vertices, it goes by area?
>
> Tara
>
> On Wed, Jan 6, 2016 at 12:21 PM, Douglas N Greve
> <greve@nmr.mgh.harvard.edu <mailto:greve@nmr.mgh.harvard.edu>> wrote:
>
>     Area in mm^2
>
>     On 01/06/2016 01:16 PM, Tara Miskovich wrote:
>     > Thank you so much, this is incredibly helpful. And just to be
>     clear is
>     > this the minimum area or vertices?
>     >
>     > Tara
>     >
>     > On Wed, Jan 6, 2016 at 12:01 PM, Douglas N Greve
>     > <greve@nmr.mgh.harvard.edu <mailto:greve@nmr.mgh.harvard.edu>
>     <mailto:greve@nmr.mgh.harvard.edu
>     <mailto:greve@nmr.mgh.harvard.edu>>> wrote:
>     >
>     >
>     >     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
>     >     >
>     >     >
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>     >
>     >     --
>     >     Douglas N. Greve, Ph.D.
>     >     MGH-NMR Center
>     > greve@nmr.mgh.harvard.edu <mailto:greve@nmr.mgh.harvard.edu>
>     <mailto:greve@nmr.mgh.harvard.edu <mailto:greve@nmr.mgh.harvard.edu>>
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>     <tel:617-726-7422>>
>     >
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>     >
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>     >
>     > --
>     > Thank you,
>     >
>     > Tara A. Miskovich, M.S.
>     > Affective Neuroscience Laboratory
>     > Department of Psychology
>     > University of Wisconsin-Milwaukee
>     > 334 Garland Hall
>     > miskovi2@uwm.edu <mailto:miskovi2@uwm.edu>
>     <mailto:miskovi2@uwm.edu <mailto:miskovi2@uwm.edu>>
>     >
>     >
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>
>     --
>     Douglas N. Greve, Ph.D.
>     MGH-NMR Center
>     greve@nmr.mgh.harvard.edu <mailto:greve@nmr.mgh.harvard.edu>
>     Phone Number: 617-724-2358 <tel:617-724-2358>
>     Fax: 617-726-7422 <tel:617-726-7422>
>
>     Bugs: surfer.nmr.mgh.harvard.edu/fswiki/BugReporting
>     <http://surfer.nmr.mgh.harvard.edu/fswiki/BugReporting>
>     FileDrop: https://gate.nmr.mgh.harvard.edu/filedrop2
>     www.nmr.mgh.harvard.edu/facility/filedrop/index.html
>     <http://www.nmr.mgh.harvard.edu/facility/filedrop/index.html>
>     Outgoing:
>     ftp://surfer.nmr.mgh.harvard.edu/transfer/outgoing/flat/greve/
>
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>
>
>
>
> --
> Thank you,
>
> Tara A. Miskovich, M.S.
> Affective Neuroscience Laboratory
> Department of Psychology
> University of Wisconsin-Milwaukee
> 334 Garland Hall
> miskovi2@uwm.edu <mailto:miskovi2@uwm.edu>
>
>
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--
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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--
Thank you,

Tara A. Miskovich, M.S.
Affective Neuroscience Laboratory
Department of Psychology
University of Wisconsin-Milwaukee
334 Garland Hall
miskovi2@uwm.edu