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Yes, thanks for the answer, now that I
think of it it was a pretty silly question, but I just was following the directions
in the randomise webpage without really understanding the background…
Stefano
From: Reza Salimi
[mailto:[log in to unmask]]
Sent: Thursday, March 27, 2008
1:49 PM
To: [log in to unmask]
Subject: Re: [FSL] tfce through
fslmaths
Hi Stefano,
I can't clearly understand your question, but think this might be the answer
you are looking for
TFCE image is not like z_stat image for which you have a default null
distribution,
so you need to have your null distribution generated and do a (voxel-wise)
non-parametric test to assess the statistical significance of your image,
one way of doing it is to use randomise and making the distribution of max_tfce
over each fake image and then calculating the p-value for each voxel in your
observed (real) image,
Best, Reza
On Thu, Mar 27, 2008 at 5:30 PM, Marenco, Stefano (NIH/NIMH) [E] <[log in to unmask]>
wrote:
I
got an image of the tfce statistic with fslmaths. How do I transform this to a
p value image (from tfce_tstat to _max_tfce_tstat)?
NIMH/GCAP
Building
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--
G. Salimi-Khorshidi,
DPhil Student in
Dept of Clinical Neurology,
webpage : http://bme.aut.ac.ir/~gsalimi
email : [log in to unmask]