the two groups.
From: freesurfer-boun...@nmr.mgh.harvard.edu
on behalf of Douglas N Greve
Sent: Wednesday, May 31, 2017 3:12:43 PM
To: freesurfer@nmr.mgh.harvard.edu
Subject: Re: [Freesurfer] Contrast matrix format {Disarmed}
What p-values are you comparing to? You should run the analysis wi
> of the cortical thickness for each individual subject in a
> specific cluster.
>
>
> *From:* freesurfer-boun...@nmr.mgh.harvard.edu
> on behalf of Douglas N Greve
>
> *Sent:* Friday, May 26, 2017 5:38:35 PM
> *To:* freesurfer@n
ect in a specific cluster.
From: freesurfer-boun...@nmr.mgh.harvard.edu
on behalf of Douglas N Greve
Sent: Friday, May 26, 2017 5:38:35 PM
To: freesurfer@nmr.mgh.harvard.edu
Subject: Re: [Freesurfer] Contrast matrix format {Disarmed}
Aren't your p-values sig?
7 PM
> *To:* freesurfer@nmr.mgh.harvard.edu
> *Subject:* Re: [Freesurfer] Contrast matrix format {Disarmed}
> It does not matter whether you used the maxvox or the mean of the
> cluster. The two p-values are measuring fundamentally different
> phenomena. The cluster pvalue is measuring t
d.edu
on behalf of Douglas N Greve
Sent: Friday, May 26, 2017 12:50:07 PM
To: freesurfer@nmr.mgh.harvard.edu
Subject: Re: [Freesurfer] Contrast matrix format {Disarmed}
It does not matter whether you used the maxvox or the mean of the
cluster. The two p-values are measuring fundamentally diff
aring the
> p-values to the cluster wise p-values.
>
>
> *From:* freesurfer-boun...@nmr.mgh.harvard.edu
> on behalf of Douglas N Greve
>
> *Sent:* Thursday, May 25, 2017 6:06:30 PM
> *To:* freesurfer@nmr.mgh.
uglas N Greve
Sent: Thursday, May 25, 2017 6:06:30 PM
To: freesurfer@nmr.mgh.harvard.edu
Subject: Re: [Freesurfer] Contrast matrix format {Disarmed}
Not sure what you did. Sound like you found the max vox from the
cluster, then extracted the values from each subject and ran those
values through the glm
Not sure what you did. Sound like you found the max vox from the
cluster, then extracted the values from each subject and ran those
values through the glm to compare p-values against those in the summary
file. Right? Now, which values from the summary file are you comparing
against? The cluster
Running that code it turns up these values:
pvalues =
1.0e-04 *
0.20840.1849
While the p-values are 0.1340 and 0.02200 respectively in the summary file, why
the difference?
From: Hilton, Benjamin Taylor
Sent: Thursday, May 25, 2017 2:43:35 PM
To: f
After some digging I found this thread where someone was having a similar
issue, so I can give this matlab code you posted a try.
http://www.mail-archive.com/freesurfer@nmr.mgh.harvard.edu/msg32951.html
From: freesurfer-boun...@nmr.mgh.harvard.edu
on behalf of
Okay then we’re having an issue somewhere along the line. Using the
cache.th40.neg.y.ocn.dat file to make a csv file, we pulled out the individual
values and compared across groups using a linear regression in R and didn’t
find a group difference for each cluster. Any thoughts as to why that m
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