clusterrandomization-alphavalue

[Eric Maris]

Dear Olga,





I'd like to clarify the output parameters of clustrandomization.

What does clusrand.critvals means. How it depends on chosen alpha threshold
(usually 0.05). As I looked through the script, it is the only parameters
which depends on alpha.

Do I need to use it somehow to choose the significant clusters?

Or can I just check the clusrand.pos(neg)clusters.pval parameters to
identify significant clusters?



Yes, you can just check the clusrand.pos(neg)clusters.pvals. The two pieces
of information are redundant: a clusrand.pos(neg)clusters.pval is less than
alpha it the cluster-level statistic of this cluster exceeds
clusrand.critval.





Good luck,





Eric Maris



dr. Eric Maris

NICI/Biological Psychology and

F.C. Donders Center for Cognitive NeuroImaging University of Nijmegen P.O.
Box 9104 6500 HE Nijmegen The Netherlands

T:+31 24 3612651 (NICI)

T:+31 24 3610754 (FCDC)

F:+31 24 3616066 (NICI)

E: maris at nici.ru.nl

MSc Cognitive Neuroscience :www.ru.nl/master/cns/



----------------------------------

The aim of this list is to facilitate the discussion between users of the
FieldTrip toolbox, to share experiences and to discuss new ideas for MEG and
EEG analysis.

http://listserv.surfnet.nl/archives/fieldtrip.html

http://www.ru.nl/fcdonders/fieldtrip/


----------------------------------
The aim of this list is to facilitate the discussion between users of the FieldTrip  toolbox, to share experiences and to discuss new ideas for MEG and EEG analysis. See also http://listserv.surfnet.nl/archives/fieldtrip.html and http://www.ru.nl/fcdonders/fieldtrip.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mailman.science.ru.nl/pipermail/fieldtrip/attachments/20070626/47780c35/attachment-0002.html>