I believe the original post wanted to know how to do a group PPI plot.
This is not possible as the ppi variable is only within each subject.
What I would recommend is plot the con_ values in a bar plot.
Additionally, the graphs in SPM are not an exact representation of the
model; which is one reason that I do not actually make the plots.
Additionally, I would suggest using gPPI and plotting the con_ values
for each condition relative to baseline/fixation to gain more
information about the connectivity induced by your task.
Best Regards, Donald McLaren
=================
D.G. McLaren, Ph.D.
Research Fellow, Department of Neurology, Massachusetts General Hospital and
Harvard Medical School
Postdoctoral Research Fellow, GRECC, Bedford VA
Website: http://www.martinos.org/~mclaren
Office: (773) 406-2464
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On Fri, Aug 2, 2013 at 10:01 AM, Marko Wilke
<[log in to unmask]> wrote:
> Hello,
>
>
>> Thank you very much for your reply but I dont think this is a matlab
>> question.
>
>
> I still do :)
>
>
>> The plot that appears here is the one plotting my PPI data
>> points (i.e. BA40_WM.PPI.ppi) , however once I do the group analysis
>> I do not know how to get this points, there is another way to do
>> it....or as you say it is just a matlab problem, if it is so, then
>> which variable contains the PPI data points that I need??
>
>
> I do not know as I am not very familiar with the way variables are stored in
> the ppi results file, but for starters, I would double-click on the file and
> explore it within Matlab's variable editor. Another source to then find out
> what the different fields mean would be the list's archive. Once you know
> which variables are the ones that interests you, see previous mail :)
>
>> I appreciate once more,
>
>
> You're welcome.
> Marko
>
>
> --
> ____________________________________________________
> PD Dr. med. Marko Wilke
> Facharzt für Kinder- und Jugendmedizin
> Leiter, Experimentelle Pädiatrische Neurobildgebung
> Universitäts-Kinderklinik
> Abt. III (Neuropädiatrie)
>
>
> Marko Wilke, MD, PhD
> Pediatrician
> Head, Experimental Pediatric Neuroimaging
> University Children's Hospital
> Dept. III (Pediatric Neurology)
>
>
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>
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