Hi
creating output similar to feat output is easy, just run 'cluster' on
any of the melodic components - you'd just have to pick a threshold
level. This you can get from the melodic thresholded maps (in
blah.ica/stats when you click the 'Output full stats folder' option
or when selecting --Ostats or --Oall at the command line). You can
check for the lowest non-zero value in the thresholded maps (with
avwmaths and avwstats) and then use this on the an unthresholded
melodic map. You can extract separate maps from the 4D file
melodic_IC using 'avwroi' or you can use avwsplit to split the 4D
file into a sequence of 3d files).
Using this to identify subclusters and location of local maxima is
fine, though you should be careful not to confuse the Z maps
generated by melodic with FEAT z maps generated under the null
hypothesis when regressing against a design matrix.
hope this helps
christian
On 26 Jan 2007, at 21:27, Wen-Ching Liu wrote:
> Dear FSL users:
>
> I had posted a question yesterday to see if there is an easy way
> to get the cluster information from Melodic program. Since there was
> no answer, I assume there is no easy way to do it. I wonder how
> difficult would this be. Can someone comment on this?
>
> Thanks,
>
>
>
> Wen-Ching Liu, Ph.D.
>
> Assistant Professor
> Functional Imaging Laboratory
> Department of Radiology
> University of Medicine and Dentistry
> of New Jersey-New Jersey Medical School
>
> 973-972-2281/fax: 973-972-0836
> http://njms.umdnj.edu/departments/radiology/fmri/index.cfm
>
>
--
Christian F. Beckmann
Oxford University Centre for Functional
Magnetic Resonance Imaging of the Brain,
John Radcliffe Hospital, Headington, Oxford OX3 9DU, UK
Email: [log in to unmask] - http://www.fmrib.ox.ac.uk/~beckmann/
Phone: +44(0)1865 222551 Fax: +44(0)1865 222717
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