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Optseq2 should be downloaded. Did you get it to download yet?

If you need a more complicated design or want to compare other design matrices, you could use the following:

M = C*inv(X'*X)*C';
eff = 1/trace(M);
vrf = 1/mean(diag(M));

where C is your contrast of interest and X is the design matrix. Higher eff and vrf are better, but you still need to have an effect. A higher vrf is better if you expect smaller effects.

For more details on design efficiency, see http://imaging.mrc-cbu.cam.ac.uk/imaging/DesignEfficiency

Best,
Donald


Best Regards, 
Donald McLaren, PhD


On Wed, Sep 21, 2016 at 3:27 AM, Alexandre Obert <[log in to unmask]> wrote:
Dear all,

I would like to introduce jitters and to test the efficiency of my design but I don't know which tool to use.
My first idea was to use optseq2, but I can't download it (probably a server pb- maybe someone could send it to me?).
Is there any other tool that could help me?

Regards,

Alexandre