Dear Denise,
I also encountered the problem of lacking data (NaNs) in the VOI vector
of the PPI complex. Just try to define your physiological vector (i.e.
regressor) referring to the afore created VOI complex which should
include the needed values.
Hope this helps,
Tobias.
Denise Dörfel schrieb:
> Dear SPM experts,
>
> I wanted to do a PPI for a contrast over 9 runs in an event related
> paradigm choosing a frontal ROI (FWE corrected).
> After specifying the PPI design and during assigning the data
> following error occured.
> It seems that there is no data in the ROI (design matrix looks like
> that), but that can't be.
> Any ideas?
>
> ___________________
> SPM2: spm_fmri_spm_ui (v2.52) 10:43:51 - 16/05/2006
> ========================================================================
> Mapping files : ...done
> Calculating globals : ...done
> Saving SPM configuration : ...SPM.mat saved
> Design reporting : Warning: Divide by zero.
> (Type "warning off MATLAB:divideByZero" to suppress this warning.)
> > In c:\programme\spm2\spm2\spm_DesMtx.m at line 646
> In c:\programme\spm2\spm2\spm_DesRep.m at line 626
> In c:\programme\spm2\spm2\spm_fmri_spm_ui.m at line 451
> Warning: Divide by zero.
> ??? Error using ==> svd
> NaN or Inf prevents convergence.
>
> Error in ==> c:\programme\spm2\spm2\spm_sp.m (sf_set)
> On line 1122 ==> [x.u, s, x.v] = svd(full(X),0);
>
> Error in ==> c:\programme\spm2\spm2\spm_sp.m
> On line 221 ==> varargout = {sf_set(X)};
>
> Error in ==> c:\programme\spm2\spm2\spm_SpUtil.m
> On line 275 ==> sX = spm_sp('Set',varargin{2});
>
> Error in ==> c:\programme\spm2\spm2\spm_DesRep.m
> On line 685 ==> else, est = spm_SpUtil('IsCon',varargin{2}.X);
> end
>
> Error in ==> c:\programme\spm2\spm2\spm_fmri_spm_ui.m
> On line 451 ==> spm_DesRep('DesMtx',SPM.xX,fname,SPM.xsDes)
>
> ??? Error while evaluating uicontrol Callback.
> ______________________
>
> Thanks,
> Denise.
>
--
Dipl.-Psych. Tobias Melcher
Address:
Neuroimaging Laboratory
Department of Psychiatry and Psychotherapy
Cognitive Neuroscience Unit
Saarland University Hospital
D-66421 Homburg/Saar
Germany
Tel.: +49 6841 1624 188
Fax: +49 6841 1624 270
Email: [log in to unmask]
--
Dipl.-Psych. Tobias Melcher
Address:
Neuroimaging Laboratory
Department of Psychiatry and Psychotherapy
Cognitive Neuroscience Unit
Saarland University Hospital
D-66421 Homburg/Saar
Germany
Tel.: +49 6841 1624 188
Fax: +49 6841 1624 270
Email: [log in to unmask]
--
Dipl.-Psych. Tobias Melcher
Address:
Neuroimaging Laboratory
Department of Psychiatry and Psychotherapy
Cognitive Neuroscience Unit
Saarland University Hospital
D-66421 Homburg/Saar
Germany
Tel.: +49 6841 1624 188
Fax: +49 6841 1624 270
Email: [log in to unmask]
--
Dipl.-Psych. Tobias Melcher
Address:
Neuroimaging Laboratory
Department of Psychiatry and Psychotherapy
Cognitive Neuroscience Unit
Saarland University Hospital
D-66421 Homburg/Saar
Germany
Tel.: +49 6841 1624 188
Fax: +49 6841 1624 270
Email: [log in to unmask]
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