On Tuesday, April 10, 2012 11:14:26 you wrote:
> To whom it may concern,
>
> I wanna use Dual-regressor but I have several questions. I would be
> thankful if somebody can answer them.
I assume you are referring to the dual regression script. The website from
which you downloaded the script answers some of your questions:
http://www.fmrib.ox.ac.uk/analysis/dualreg/
> 1. What are design matrix and design contrast in command line and how I
> should create them?
These are inputs to randomise in "stage 3" of dual regression. Read the
documentation for randomise.
http://www.fmrib.ox.ac.uk/fsl/randomise/index.html
The Glm command provides a graphical means of generating your design.mat and
design.con files.
> 2. Is it necessary to put them in command line?
Yes, if you are comparing two or more groups.
> 3. Is the dual regressor command line calculate Mixture model
> (Guassian-2Gamma) or not?
When used for comparing groups, no, I don not think it does. Mixture modelling
ought not to be necessary for this step anyway since between-subject variance
provides a source of standard error.
> Thanks in advance,
>
> Armin
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