On 2017-02-06, at 18:54, Douglas N Greve <greve@nmr.mgh.harvard.edu> wrote:

yes, fsig is the F test. The sig has the result of all the individual 
t-tests


On 02/06/2017 08:41 AM, Seung-Goo KIM wrote:

Dear surfers,

I computed F-contrast using selxavg3-sess with an identity matrix as a 
contrast matrix. My question is about the result file “sig.*”. As far 
as I understand, the “sig.*” file contains signed-minnus-log-p-values 
(like, -log10(p)*Sign(t)) for a certain contrast.

So I expected the dimension should be #vertices-by-1, but the sig.* 
file is in the dimension of #vertices-by-1-by-1-by-#regressors. I 
would appreciate post-hoc tests after F-test, but the dimension 
doesn’t look like one… or is it? like i-th regressor v.s. (N-i) 
regressors? If one can tell where I can find p-values for the F-test, 
and what are the values in the sig.* file.

+ wait. is "fsig.*” for the F-test? and “sig.*” for a set of 
one-vs.-the-others contrasts? I would still appreciate if one can 
confirm it.

Best regards,
-- 
Seung-Goo KIM

Research Group for Cortical Networks and Cognitive Functions,
Max Planck Institute for Human Cognitive and Brain Sciences,
Stephanstraße 1A, 04103 Leipzig, Germany.
Phone: +49 341 9940 2618 | Fax: +49 341 9940 2624
http://www.cbs.mpg.de/~skim <http://www.cbs.mpg.de/%7Eskim>



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-- 
Douglas N. Greve, Ph.D.
MGH-NMR Center
greve@nmr.mgh.harvard.edu
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