Hi Steve,
It was suggested in FSL course materials to use Multi-session temporal
concatenation to do group ICA analysis on rs-fMRI data. So I wonder
what is the difference between this method and your beta script?
On Thu, Dec 17, 2009 at 8:06 PM, Stephen Smith <[log in to unmask]> wrote:
> Hi - one thing to note is that we do not recommend running separate ICA
> analyses for separate subjects for such studies. There is too much danger of
> getting non-comparable decompositions in different subjects, for a number of
> reasons; this is why we recommend doing a group-wise concat-ICA followed by
> dual-regression - email me if you want to try out the dual-regression beta
> script.
> Cheers.
>
> On 17 Dec 2009, at 11:31, Philipp Klein wrote:
>
> Hello,
>
> we have used MELODIC single-session ICA to extract the default-mode network
> (DMN) component in a group of psychiatric patients and healthy controls. Now
> we want to compare the DMN component in both groups using RANDOMISE.
>
> Here is the question: I am not sure which map in the stats-folder to use.
> From the mailing-list I learned that it is not advised to use the
> thersh_zstat-map. How about the probmap though? And if I can use the
> probmap, what exactly does it describe?
>
> Any help is greatly appreciated!
>
> Best,
> Philipp
>
>
>
> ---------------------------------------------------------------------------
> Stephen M. Smith, Professor of Biomedical Engineering
> Associate Director, Oxford University FMRIB Centre
>
> FMRIB, JR Hospital, Headington, Oxford OX3 9DU, UK
> +44 (0) 1865 222726 (fax 222717)
> [log in to unmask] http://www.fmrib.ox.ac.uk/~steve
> ---------------------------------------------------------------------------
>
>
>
>
--
Best Regards
Xue, Feng Phd. candidate
Major in Developmental Cognitive Neuroscience
National Key Laboratory of Cognitive Neuroscience and Learning
Beijing Normal University
Beijing, China. 100875
Tel: +86-13810154455
web: http://psychbrain.bnu.edu.cn
==============================================
Welcome to MuDuo JinSheng BBS @ Beijing Normal University
telnet://bbs.mdjs.org
http://bbs.mdjs.org
|